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Why thousands of people are traveling to one country to see these birds

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Friday, January 3, 2025

A crimson-rumped toucanet at a popular birdwatching destination in southwestern Colombia called La Florida. This story was originally published in The Highlight, Vox’s member-exclusive magazine. To get early access to member-exclusive stories every month, join the Vox Membership program today. Haga clic aquí para leer esta historia en español. VALLE DEL CAUCA, Colombia — From the side of an old highway that cuts through the Andean foothills, Dora Alicia Londoño’s home looks unremarkable. Located in a rural area about two hours from Cali, the largest city in southern Colombia, it’s a simple, two-story concrete building with a sheet metal roof. A few potted plants hang from the rafters.  The main attraction is in her backyard.  There, you will find birds. So many birds. And these are not just your common backyard varieties, like robins and bluejays, but rare forest species that birdwatchers around the world yearn to see. Londoño, 63, has turned her home into a birdwatching lodge, a paradise. There are five guest rooms and a cafe with a view into her backyard, a dense tropical forest. There, she has a homemade bird feeder: wooden shelves holding pieces of fruit. Upstairs, on the roof, she had additional feeders for hummingbirds. When I visited on a warm morning in October, it felt like stepping into a nature documentary. The backyard was teeming with birds, none of which I’d seen before: glistening green mountain tanagers, toucan barbets, lemon-browed flycatchers, velvet-purple coronets. These birds were so colorful they almost looked unreal, painting the yard with streaks of yellows, reds, blues, and purples. And then there was the noise — a clamor of cheeps, trills, and squawks.   “The toucan barbet is one of the rarest birds in the world and it just eats bananas right here,” said Natalia Ocampo-Peñuela, a Colombian-born conservation ecologist and bird expert at the University of California Santa Cruz, who was at Londoño’s with me that morning. In an hour or so, I saw about 45 different species, Ocampo-Peñuela estimates, while leisurely sipping coffee and eating empanadas. If this is birdwatching, I’m in. If you’re into birds, Colombia is the place to be. It has more avian species than any other country on Earth, with close to 2,000 distinct and often very beautiful varieties, nearly 20 percent of the world’s birds. That diversity is rooted in geography. Colombia is a mosaic of different habitats, from tropical rainforest to snow-capped mountains, and different birds have adapted to each of them. And as I experienced that morning, birding here can be incredibly easy. You don’t even need hiking shoes. !function(){"use strict";window.addEventListener("message",(function(a){if(void 0!==a.data["datawrapper-height"]){var e=document.querySelectorAll("iframe");for(var t in a.data["datawrapper-height"])for(var r=0;r<e.length;r++)if(e[r].contentWindow===a.source){var i=a.data["datawrapper-height"][t]+"px";e[r].style.height=i}}}))}(); This isn’t much of a secret. In the last decade, the activity of birdwatching has exploded in Colombia, said Ocampo-Peñuela, who also studies ecotourism. Activity on eBird, a platform where birders can record their observations, increased more than 27-fold in Colombia since 2010, according to unpublished research by Ocampo-Peñuela and other authors that’s currently under review. While the bulk of these birders are foreigners from places like the US and Canada, more and more Colombians are picking up the hobby, too, she said.  This burgeoning industry is, as many experts argue, a rare force of good. It’s funneling money into rural communities and creating material value for healthy forests — something the environmental movement has, for decades, struggled to do. Indeed, at a time when tropical forests and grasslands are besieged by farming, mining, and other threats, birdwatching tourism offers a real incentive to keep ecosystems intact. Without forests, there are no birds, no birders, and no birding tourism.  There are, no doubt, concerns about sustainability as this young industry matures and more foreign tourists descend on Colombia. But for now, local communities are at the helm of this industry, which is good for people, good for the local economy, and good for wildlife. They intend to keep it that way. Londoño, who goes by Doña Dora, didn’t dream of running a birdwatching lodge and welcoming tourists into her backyard. In the 1990s, she moved here, to the outskirts of Cali, to escape violence near her home in the tropical grasslands, known as Los Llanos. This story is not uncommon. A decades-long conflict between armed groups and the government has displaced more than 5 million people across the country.  Doña Dora arrived with nothing, she told me that morning, as we watched hummingbirds flutter around a pair of freshly filled feeders like a collection of airborne jewels. She cleaned homes and sold empanadas on the side of the road. Her husband picked up odd jobs. Then one day she went to the dentist, and her life changed.  Her dentist, a man named Gilberto Collazos Bolaños, was a bird fanatic, and he knew the forest around her home was full of avian life. So he gave her a suggestion: Put some fruit on a table outside, and wait. The fruit will draw in birds, she remembers him saying, the birds will attract tourists, and the tourists will bring in money. She took his advice. And birds came. First there were bluebirds, golden tanagers, and colorful finches called euphonias. Then rarer species like rufous-throated tanagers and toucan barbets arrived. Toucan barbets are the unequivocal stars of the show. Found only in the mountain forests of western Colombia and Ecuador, they have a brilliant plumage — a collection of light gray, red, yellow, and black — and a song that sounds a bit like a frog. As the dentist predicted, birders eventually arrived, too, largely finding her home by word of mouth. And in 2015, Colombia hosted its first annual BirdFair, a major birding festival, and one of the event’s official field trips was a visit to Doña Dora’s home. That put her on the map, she told me.  “We always loved nature and trees,” said Doña Dora, who, when I visited, was wearing a head covering and what looked like a white lab coat. “But we didn’t have a vision for what we have right now, of birdwatching.” Today, her home is considered one of the country’s top birdwatching destinations, and some visitors have dubbed it “the best backyard birding spot in the world.” It’s this birding business that now supports her family.  Foreign tourists pay about $9 to view birds on her property ($13 if they have a camera). A room for two people is around $50 per night, which doesn’t include her coffee or her homemade empanadas. In the busy season, from September to March, the lodge will get more than 100 tourists a month, according to her son Elber Sanchez Londoño, who helps run the business. In her backyard that morning, I watched birds. But I also watched birdwatchers watch birds. I honestly found this activity just as thrilling.  What is it that makes some people so obsessed with birds? One explanation is that you can find them pretty much everywhere. That makes birdwatching easy to start and practice, no matter where you live. Birding can also connect you to a community. It tends to bring like-minded people together, both in person and through platforms like eBird and iNaturalist, where they can share their observations. Plus, it’s free and done outdoors, which is one reason why birding became so popular during the Covid-19 pandemic when people were avoiding crowded, indoor spaces. “It’s like an addiction,” Ocampo-Peñuela, a self-identified birder, told me. “You see these birds, and their beauty, and it just fills you with happy hormones. Then you want to do it more.” That morning, I met several tourists at Doña Dora’s lodge. Most of them toted cameras with long lenses. “This is unbelievable,” said Santiago Ferro, a visitor from Toronto, who grew up in Bogotá. I asked him how this spot compares to birding in North America. He just laughed. Birders are drawn to Colombia for its sheer number of avian species, many of which are found nowhere else. But the ongoing surge in birding tourism has far more to do with safety. Until recently, a conflict between the government and a number of armed groups spread violence across Colombia. At the center of the conflict — which began in the mid-20th century — was the distribution of wealth. The largest such group, Fuerzas Armadas Revolucionarias de Colombia (FARC), fought against the government and right-wing paramilitary groups to bring more wealth to poor rural parts of Colombia. Violence tied to the conflict killed more than 200,000 people, and most of them were civilians. In 2016, after years of tense negotiations, the government and FARC signed a peace agreement. Put simply, the agreement required that FARC give up their weapons, stop fighting, and exit the drug trade, which was helping fund the conflict. In return they were offered political power and a promise to invest heavily in rural areas.  Violence still persists in some regions, especially near the borders, and the US State Department advises people to reconsider traveling to Colombia. Yet a tenuous truce holds. The peace agreement has made the country much safer, for locals and foreigners alike, than it has been for decades — and that, in turn, has opened the door to more birdwatching tourism.  In 2017, Ocampo-Peñuela published a study showing that birdwatching, as measured by activity on eBird, was already expanding in areas that were once considered dangerous, including Putumayo, a department in southern Colombia. Ocampo-Peñuela’s more recent research, which is not yet published, finds that birdwatching activity skyrocketed in Colombia after 2016, though it dipped during the pandemic. (A large portion of eBird users are from the US, so data from the platform over-represents American birding trends.) !function(){"use strict";window.addEventListener("message",(function(a){if(void 0!==a.data["datawrapper-height"]){var e=document.querySelectorAll("iframe");for(var t in a.data["datawrapper-height"])for(var r=0;r&lt;e.length;r++)if(e[r].contentWindow===a.source){var i=a.data["datawrapper-height"][t]+"px";e[r].style.height=i}}}))}(); The government doesn’t track birdwatching activity, though it says tourism overall is climbing. Last year, a record 6.1 million foreigners visited Colombia, up 30 percent from 2022, and the majority of them are looking for nature experiences, according to Procolombia, a government agency that markets the country. Tourism is already up this year compared to 2023, Procolombia told Vox. And since 2021, the number of nature lodges, including birding lodges, has nearly tripled, the agency said.  In global hot spots of biodiversity like Colombia, economic growth often comes at the expense of ecosystems. A growing cattle-ranching industry destroys rainforests. A mining boom leaches toxins into streams and soil. Comparatively, Colombia’s ballooning birdwatching industry seems like something to celebrate.  Tourism is not only funding birdwatching destinations like Doña Dora’s but building demand for local birdwatching guides. That’s created jobs for Colombians with deep ties to their surrounding ecosystems, whether or not they have a formal education. Generational knowledge of local birds and where to find them — referred to in some academic circles as traditional ecological knowledge — is increasingly valuable here, even in a straight economic sense. Birdwatching tourism gives it value. The following morning, I traveled to a place called Laguna de Sonso, a wetland just north of Cali. It’s a blip of natural habitat in a sea of sugarcane plantations, a widespread crop in Valle del Cauca. When I arrived, a cocoi heron, a large gray and white bird with a long, sharp beak, was wading in the water, sending ripples out across a lake. The wetland is a birder’s dream. More than 300 avian species live in or pass through Laguna de Sonso, including giants like the osprey and weirdos like the common potoo, a bird with an unsettlingly wide mouth. It’s also where youth from the surrounding communities learn to become birdwatching guides, or interpreters, as they call themselves. “We call ourselves interpreters because we are a community that has had empirical training,” said local guide Jhonathan Estiven Bedoya Betancourth, meaning they’ve learned through observation and experience. “We do not have, let's say, the training of a professional tourist guide.” (A pair of community organizations at Laguna de Sonso do offer workshops and mentorship for bird guiding.) Bedoya Betancourth, 24, says he’s been guiding birdwatching tours since he was 14. “We interpret everything that this beautiful territory has,” said Bedoya Betancourth, who wore a pair of binoculars around his neck.   Bedoya Betancourth started guiding because he loves birds, and he’s good at it. He can imitate the calls of around 30 species, he said. (I obviously asked him to demonstrate, and he impressively whistled the repetitive up-and-down call of a marsh bird called the gray-cowled wood-rail.) But it was also a way to earn money for his family, he said. He makes about $35 for each guiding trip, not including tip, and he’ll lead several trips a month. He supplements his income by making wood carvings to sell to tourists and locals.  “Birdwatching for me and for the group of interpreters is one of the economic activities that has been able to keep the community afloat,” said Maria Omaira Rendon Rayo, a community leader at Laguna de Sonso.  The birding economy gives people a reason to stay in the community, she said, and offers an alternative to careers that might attract violence, such as cultivating and selling drugs. By training kids, the laguna and its community organizations are also helping build a conservation ethic that will last for decades. “If you are receiving economic income from an activity such as conservation, then you want to conserve more,” said Rendon Rayo, who works with a local organization called Asociación de Productores Agropecuarios del Porvenir, which helps restore forests by planting trees and trains birding guides in Laguna de Sonso. “You want to help plant more trees. You want to help keep the laguna clean.” Nature tourism is not an unequivocal force of good. It actually often harms the environment, as researchers like Ralf Buckley have documented. Tourists have inadvertently introduced invasive species to places like the Galapagos Islands, snorkelers and divers have damaged coral, including in the Great Barrier Reef, and hotels are commonly built atop natural habitat. There’s also an exploitation issue: In many cases tourism companies are owned by foreigners, limiting the benefits that flow to local communities, on which they often depend. Plus, as a place swells with wealthy tourists, the cost of necessities like housing and food can rise, making it unlivable for locals.  Birdwatching tourism in Colombia has so far managed to avoid many of these pitfalls. It has some guardrails built in, Ocampo-Peñuela said. For one, birding doesn’t work well in large groups — they scare away birds and make it hard to spot something fluttering far away — and smaller groups have a lighter environmental impact. One of the lodges I visited capped the number of tourists to 10. Another said there are days when they will turn visitors away. What’s more is that finding rare and endemic species, which birders are most drawn to, typically requires local expertise. That helps keep money within local communities.  Then there’s the most important guardrail: Birdwatching tourism doesn’t work if it’s not sustainable. Even if you put out fruit, the birds won’t come if they have no habitat — no forest, no wetland. Birding is not like going to the zoo, where you can always expect to see animals. It’s in the economic interest of the birdwatching industry to make sure ecosystems remain healthy.  “You can’t do this business without conserving,” Javier Rubio, who runs another birdwatching destination, called La Florida, at his property northwest of Cali. “If you don't conserve, you put your future as a business at risk. If you start cutting down trees and damaging the forest, [the birds] will be left without food, which is the reason why they are here.” Doña Dora says one of her goals is to earn enough money so that her son can buy forested land around their home. He wants to conserve it, she told me. “That’s the idea for the future,” Elber, her son, told me, “to make sure that the birds continue to live in a healthy ecosystem.” The industry is still young, so the full extent of its environmental impact has yet to be seen. People involved in growing birdwatching tourism say it’s critical that Colombians, and especially people in rural, bird-filled regions, determine what the industry ultimately looks like. “It’s necessary that we Colombians define what kind of birdwatching tourism we want,” said Carlos Mario Wagner, the founder and director of Colombia BirdFair and one of the country’s most well-known birders.  Birding tourism shouldn’t just cater to foreigners, he said, but also to locals. “Something that makes me very happy is that Colombians are increasingly hiring guides,” Wagner told me. Birding has given Colombians an opportunity to reconnect with their homeland following the peace agreement, he said. It instills in them a sense of pride for a version of Colombia that’s known for nature, not violence. The birding industry will ultimately never be huge, Ocampo-Peñuela says. While it’s growing globally — faster than other forms of ecotourism, she’s found — it will likely remain niche, limited by the small number of people who want to travel to rural places to look at birds, often very early in the morning. “You have to have the right personality,” she told me.  So it’s not like birdwatching alone will fix Colombia’s problems and raise the rural class out of poverty.  Yet what it offers is incredibly special. Not just money for local communities, alternative career paths, and real incentives to save forests, but also something that’s harder to quantify. On a rainy afternoon in October, I visited Rubio at La Florida. Like Doña Dora, Rubio has a homemade bird feeder in his yard constructed with branches and pieces of fruit. It attracted a different cast of avian visitors. Here, the star was the multicolored tanager, a colorful species found only in the mountain forests of Colombia. My favorite, however, was the crimson-rumped toucanet, which is essentially a mini toucan. They’re bright green with rust-colored beaks that seem far too big for their bodies.  Over my fourth cup of black coffee, Rubio told me he was a criminal lawyer for nearly three decades before getting into the birdwatching business. A few years ago, he invited friends to his home to go birding. They saw the multicolored tanager and told him that his property — which abuts a tropical forest — has enormous potential to become a birdwatching destination.  Eager to live a more relaxing life, Rubio, 56, quit his job as a lawyer and started building a tourism business.  “I feel extremely good doing this,” Rubio told me. “I often feel like I’m giving happiness to people. Almost unanimously the people who come say, ‘This is a paradise.’ When you start birdwatching, you start to feel attracted not only to birds but to the peaceful environment of nature.” This is a point that nearly every birder I spoke to made: Caring about birds is a gateway to caring about nature, of seeing its true worth.  “It is a gradual process,” Rubio told me, as we sat on a covered deck as it rained, watching a multicolored tanager bounce around in the branches a few feet away. “You first contemplate them, then you begin to understand them, and then you begin to preserve them. That is the path taken by the one who takes up this habit of birdwatching.”

This story was originally published in The Highlight, Vox’s member-exclusive magazine. To get early access to member-exclusive stories every month, join the Vox Membership program today. Haga clic aquí para leer esta historia en español. VALLE DEL CAUCA, Colombia — From the side of an old highway that cuts through the Andean foothills, Dora Alicia […]

A bright green toucanet with red beak is perched on a leafy branch with a plum hanging from it
A crimson-rumped toucanet at a popular birdwatching destination in southwestern Colombia called La Florida.


This story was originally published in The Highlight, Vox’s member-exclusive magazine. To get early access to member-exclusive stories every month, join the Vox Membership program today. Haga clic aquí para leer esta historia en español.

VALLE DEL CAUCA, Colombia — From the side of an old highway that cuts through the Andean foothills, Dora Alicia Londoño’s home looks unremarkable. Located in a rural area about two hours from Cali, the largest city in southern Colombia, it’s a simple, two-story concrete building with a sheet metal roof. A few potted plants hang from the rafters. 

The main attraction is in her backyard. 

There, you will find birds. So many birds. And these are not just your common backyard varieties, like robins and bluejays, but rare forest species that birdwatchers around the world yearn to see.

Londoño, 63, has turned her home into a birdwatching lodge, a paradise. There are five guest rooms and a cafe with a view into her backyard, a dense tropical forest. There, she has a homemade bird feeder: wooden shelves holding pieces of fruit. Upstairs, on the roof, she had additional feeders for hummingbirds.

When I visited on a warm morning in October, it felt like stepping into a nature documentary. The backyard was teeming with birds, none of which I’d seen before: glistening green mountain tanagers, toucan barbets, lemon-browed flycatchers, velvet-purple coronets. These birds were so colorful they almost looked unreal, painting the yard with streaks of yellows, reds, blues, and purples. And then there was the noise — a clamor of cheeps, trills, and squawks.  

A hummingbird with vibrant blue, purple and green feathers

“The toucan barbet is one of the rarest birds in the world and it just eats bananas right here,” said Natalia Ocampo-Peñuela, a Colombian-born conservation ecologist and bird expert at the University of California Santa Cruz, who was at Londoño’s with me that morning. In an hour or so, I saw about 45 different species, Ocampo-Peñuela estimates, while leisurely sipping coffee and eating empanadas. If this is birdwatching, I’m in.

If you’re into birds, Colombia is the place to be. It has more avian species than any other country on Earth, with close to 2,000 distinct and often very beautiful varieties, nearly 20 percent of the world’s birds. That diversity is rooted in geography. Colombia is a mosaic of different habitats, from tropical rainforest to snow-capped mountains, and different birds have adapted to each of them. And as I experienced that morning, birding here can be incredibly easy. You don’t even need hiking shoes.

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This isn’t much of a secret. In the last decade, the activity of birdwatching has exploded in Colombia, said Ocampo-Peñuela, who also studies ecotourism. Activity on eBird, a platform where birders can record their observations, increased more than 27-fold in Colombia since 2010, according to unpublished research by Ocampo-Peñuela and other authors that’s currently under review. While the bulk of these birders are foreigners from places like the US and Canada, more and more Colombians are picking up the hobby, too, she said. 

A dark brown bird with light blue beak and yellow tail feathers stands on a brand while eating a banana

This burgeoning industry is, as many experts argue, a rare force of good. It’s funneling money into rural communities and creating material value for healthy forests — something the environmental movement has, for decades, struggled to do. Indeed, at a time when tropical forests and grasslands are besieged by farming, mining, and other threats, birdwatching tourism offers a real incentive to keep ecosystems intact. Without forests, there are no birds, no birders, and no birding tourism. 

There are, no doubt, concerns about sustainability as this young industry matures and more foreign tourists descend on Colombia. But for now, local communities are at the helm of this industry, which is good for people, good for the local economy, and good for wildlife. They intend to keep it that way.

Londoño, who goes by Doña Dora, didn’t dream of running a birdwatching lodge and welcoming tourists into her backyard. In the 1990s, she moved here, to the outskirts of Cali, to escape violence near her home in the tropical grasslands, known as Los Llanos. This story is not uncommon. A decades-long conflict between armed groups and the government has displaced more than 5 million people across the country. 

A woman sitting on a small brick wall with a green and purple painted bird mural behind her. She’s looking out at lush greenery to her left

Doña Dora arrived with nothing, she told me that morning, as we watched hummingbirds flutter around a pair of freshly filled feeders like a collection of airborne jewels. She cleaned homes and sold empanadas on the side of the road. Her husband picked up odd jobs.

Then one day she went to the dentist, and her life changed. 

Her dentist, a man named Gilberto Collazos Bolaños, was a bird fanatic, and he knew the forest around her home was full of avian life. So he gave her a suggestion: Put some fruit on a table outside, and wait. The fruit will draw in birds, she remembers him saying, the birds will attract tourists, and the tourists will bring in money.

She took his advice. And birds came. First there were bluebirds, golden tanagers, and colorful finches called euphonias. Then rarer species like rufous-throated tanagers and toucan barbets arrived. Toucan barbets are the unequivocal stars of the show. Found only in the mountain forests of western Colombia and Ecuador, they have a brilliant plumage — a collection of light gray, red, yellow, and black — and a song that sounds a bit like a frog.

As the dentist predicted, birders eventually arrived, too, largely finding her home by word of mouth. And in 2015, Colombia hosted its first annual BirdFair, a major birding festival, and one of the event’s official field trips was a visit to Doña Dora’s home. That put her on the map, she told me. 

“We always loved nature and trees,” said Doña Dora, who, when I visited, was wearing a head covering and what looked like a white lab coat. “But we didn’t have a vision for what we have right now, of birdwatching.”

Today, her home is considered one of the country’s top birdwatching destinations, and some visitors have dubbed it “the best backyard birding spot in the world.” It’s this birding business that now supports her family. 

Foreign tourists pay about $9 to view birds on her property ($13 if they have a camera). A room for two people is around $50 per night, which doesn’t include her coffee or her homemade empanadas. In the busy season, from September to March, the lodge will get more than 100 tourists a month, according to her son Elber Sanchez Londoño, who helps run the business.

In her backyard that morning, I watched birds. But I also watched birdwatchers watch birds. I honestly found this activity just as thrilling. 

two people in a forest looking through binoculars toward the sky

What is it that makes some people so obsessed with birds? One explanation is that you can find them pretty much everywhere. That makes birdwatching easy to start and practice, no matter where you live. Birding can also connect you to a community. It tends to bring like-minded people together, both in person and through platforms like eBird and iNaturalist, where they can share their observations. Plus, it’s free and done outdoors, which is one reason why birding became so popular during the Covid-19 pandemic when people were avoiding crowded, indoor spaces.

“It’s like an addiction,” Ocampo-Peñuela, a self-identified birder, told me. “You see these birds, and their beauty, and it just fills you with happy hormones. Then you want to do it more.”

That morning, I met several tourists at Doña Dora’s lodge. Most of them toted cameras with long lenses. “This is unbelievable,” said Santiago Ferro, a visitor from Toronto, who grew up in Bogotá. I asked him how this spot compares to birding in North America. He just laughed.

Birders are drawn to Colombia for its sheer number of avian species, many of which are found nowhere else. But the ongoing surge in birding tourism has far more to do with safety.

Until recently, a conflict between the government and a number of armed groups spread violence across Colombia. At the center of the conflict — which began in the mid-20th century — was the distribution of wealth. The largest such group, Fuerzas Armadas Revolucionarias de Colombia (FARC), fought against the government and right-wing paramilitary groups to bring more wealth to poor rural parts of Colombia. Violence tied to the conflict killed more than 200,000 people, and most of them were civilians.

In 2016, after years of tense negotiations, the government and FARC signed a peace agreement. Put simply, the agreement required that FARC give up their weapons, stop fighting, and exit the drug trade, which was helping fund the conflict. In return they were offered political power and a promise to invest heavily in rural areas. 

Violence still persists in some regions, especially near the borders, and the US State Department advises people to reconsider traveling to Colombia. Yet a tenuous truce holds. The peace agreement has made the country much safer, for locals and foreigners alike, than it has been for decades — and that, in turn, has opened the door to more birdwatching tourism. 

In 2017, Ocampo-Peñuela published a study showing that birdwatching, as measured by activity on eBird, was already expanding in areas that were once considered dangerous, including Putumayo, a department in southern Colombia. Ocampo-Peñuela’s more recent research, which is not yet published, finds that birdwatching activity skyrocketed in Colombia after 2016, though it dipped during the pandemic. (A large portion of eBird users are from the US, so data from the platform over-represents American birding trends.)

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The government doesn’t track birdwatching activity, though it says tourism overall is climbing. Last year, a record 6.1 million foreigners visited Colombia, up 30 percent from 2022, and the majority of them are looking for nature experiences, according to Procolombia, a government agency that markets the country. Tourism is already up this year compared to 2023, Procolombia told Vox. And since 2021, the number of nature lodges, including birding lodges, has nearly tripled, the agency said. 

In global hot spots of biodiversity like Colombia, economic growth often comes at the expense of ecosystems. A growing cattle-ranching industry destroys rainforests. A mining boom leaches toxins into streams and soil. Comparatively, Colombia’s ballooning birdwatching industry seems like something to celebrate. 

Tourism is not only funding birdwatching destinations like Doña Dora’s but building demand for local birdwatching guides. That’s created jobs for Colombians with deep ties to their surrounding ecosystems, whether or not they have a formal education. Generational knowledge of local birds and where to find them — referred to in some academic circles as traditional ecological knowledge — is increasingly valuable here, even in a straight economic sense. Birdwatching tourism gives it value.

The following morning, I traveled to a place called Laguna de Sonso, a wetland just north of Cali. It’s a blip of natural habitat in a sea of sugarcane plantations, a widespread crop in Valle del Cauca. When I arrived, a cocoi heron, a large gray and white bird with a long, sharp beak, was wading in the water, sending ripples out across a lake.

The wetland is a birder’s dream. More than 300 avian species live in or pass through Laguna de Sonso, including giants like the osprey and weirdos like the common potoo, a bird with an unsettlingly wide mouth.

It’s also where youth from the surrounding communities learn to become birdwatching guides, or interpreters, as they call themselves. “We call ourselves interpreters because we are a community that has had empirical training,” said local guide Jhonathan Estiven Bedoya Betancourth, meaning they’ve learned through observation and experience. “We do not have, let's say, the training of a professional tourist guide.” (A pair of community organizations at Laguna de Sonso do offer workshops and mentorship for bird guiding.)

Bedoya Betancourth, 24, says he’s been guiding birdwatching tours since he was 14. “We interpret everything that this beautiful territory has,” said Bedoya Betancourth, who wore a pair of binoculars around his neck.  

A woman with bright red hair sits on a fallen tree within a forest next to water

Bedoya Betancourth started guiding because he loves birds, and he’s good at it. He can imitate the calls of around 30 species, he said. (I obviously asked him to demonstrate, and he impressively whistled the repetitive up-and-down call of a marsh bird called the gray-cowled wood-rail.) But it was also a way to earn money for his family, he said. He makes about $35 for each guiding trip, not including tip, and he’ll lead several trips a month. He supplements his income by making wood carvings to sell to tourists and locals. 

“Birdwatching for me and for the group of interpreters is one of the economic activities that has been able to keep the community afloat,” said Maria Omaira Rendon Rayo, a community leader at Laguna de Sonso. 

The birding economy gives people a reason to stay in the community, she said, and offers an alternative to careers that might attract violence, such as cultivating and selling drugs. By training kids, the laguna and its community organizations are also helping build a conservation ethic that will last for decades.

“If you are receiving economic income from an activity such as conservation, then you want to conserve more,” said Rendon Rayo, who works with a local organization called Asociación de Productores Agropecuarios del Porvenir, which helps restore forests by planting trees and trains birding guides in Laguna de Sonso. “You want to help plant more trees. You want to help keep the laguna clean.”

Nature tourism is not an unequivocal force of good. It actually often harms the environment, as researchers like Ralf Buckley have documented. Tourists have inadvertently introduced invasive species to places like the Galapagos Islands, snorkelers and divers have damaged coral, including in the Great Barrier Reef, and hotels are commonly built atop natural habitat. There’s also an exploitation issue: In many cases tourism companies are owned by foreigners, limiting the benefits that flow to local communities, on which they often depend. Plus, as a place swells with wealthy tourists, the cost of necessities like housing and food can rise, making it unlivable for locals. 

Birdwatching tourism in Colombia has so far managed to avoid many of these pitfalls. It has some guardrails built in, Ocampo-Peñuela said. For one, birding doesn’t work well in large groups — they scare away birds and make it hard to spot something fluttering far away — and smaller groups have a lighter environmental impact. One of the lodges I visited capped the number of tourists to 10. Another said there are days when they will turn visitors away.

What’s more is that finding rare and endemic species, which birders are most drawn to, typically requires local expertise. That helps keep money within local communities. 

Then there’s the most important guardrail: Birdwatching tourism doesn’t work if it’s not sustainable. Even if you put out fruit, the birds won’t come if they have no habitat — no forest, no wetland. Birding is not like going to the zoo, where you can always expect to see animals. It’s in the economic interest of the birdwatching industry to make sure ecosystems remain healthy. 

“You can’t do this business without conserving,” Javier Rubio, who runs another birdwatching destination, called La Florida, at his property northwest of Cali. “If you don't conserve, you put your future as a business at risk. If you start cutting down trees and damaging the forest, [the birds] will be left without food, which is the reason why they are here.”

Doña Dora says one of her goals is to earn enough money so that her son can buy forested land around their home. He wants to conserve it, she told me. “That’s the idea for the future,” Elber, her son, told me, “to make sure that the birds continue to live in a healthy ecosystem.”

The industry is still young, so the full extent of its environmental impact has yet to be seen. People involved in growing birdwatching tourism say it’s critical that Colombians, and especially people in rural, bird-filled regions, determine what the industry ultimately looks like. “It’s necessary that we Colombians define what kind of birdwatching tourism we want,” said Carlos Mario Wagner, the founder and director of Colombia BirdFair and one of the country’s most well-known birders. 

Birding tourism shouldn’t just cater to foreigners, he said, but also to locals. “Something that makes me very happy is that Colombians are increasingly hiring guides,” Wagner told me. Birding has given Colombians an opportunity to reconnect with their homeland following the peace agreement, he said. It instills in them a sense of pride for a version of Colombia that’s known for nature, not violence.

The birding industry will ultimately never be huge, Ocampo-Peñuela says. While it’s growing globally — faster than other forms of ecotourism, she’s found — it will likely remain niche, limited by the small number of people who want to travel to rural places to look at birds, often very early in the morning. “You have to have the right personality,” she told me. 

So it’s not like birdwatching alone will fix Colombia’s problems and raise the rural class out of poverty. 

Yet what it offers is incredibly special. Not just money for local communities, alternative career paths, and real incentives to save forests, but also something that’s harder to quantify.

A man holding binoculars stands on a wooden platform with greenery surrounding

On a rainy afternoon in October, I visited Rubio at La Florida. Like Doña Dora, Rubio has a homemade bird feeder in his yard constructed with branches and pieces of fruit. It attracted a different cast of avian visitors. Here, the star was the multicolored tanager, a colorful species found only in the mountain forests of Colombia. My favorite, however, was the crimson-rumped toucanet, which is essentially a mini toucan. They’re bright green with rust-colored beaks that seem far too big for their bodies. 

Over my fourth cup of black coffee, Rubio told me he was a criminal lawyer for nearly three decades before getting into the birdwatching business. A few years ago, he invited friends to his home to go birding. They saw the multicolored tanager and told him that his property — which abuts a tropical forest — has enormous potential to become a birdwatching destination. 

Eager to live a more relaxing life, Rubio, 56, quit his job as a lawyer and started building a tourism business. 

“I feel extremely good doing this,” Rubio told me. “I often feel like I’m giving happiness to people. Almost unanimously the people who come say, ‘This is a paradise.’ When you start birdwatching, you start to feel attracted not only to birds but to the peaceful environment of nature.”

This is a point that nearly every birder I spoke to made: Caring about birds is a gateway to caring about nature, of seeing its true worth. 

“It is a gradual process,” Rubio told me, as we sat on a covered deck as it rained, watching a multicolored tanager bounce around in the branches a few feet away. “You first contemplate them, then you begin to understand them, and then you begin to preserve them. That is the path taken by the one who takes up this habit of birdwatching.”

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In Alaska’s Warming Arctic, Photos Show an Indigenous Elder Passing Down Hunting Traditions

An Inupiaq elder teaches his great-grandson to hunt in rapidly warming Northwest Alaska where thinning ice, shifting caribou migrations and severe storms are reshaping life

KOTZEBUE, Alaska (AP) — The low autumn light turned the tundra gold as James Schaeffer, 7, and his cousin Charles Gallahorn, 10, raced down a dirt path by the cemetery on the edge of town. Permafrost thaw had buckled the ground, tilting wooden cross grave markers sideways. The boys took turns smashing slabs of ice that had formed in puddles across the warped road.Their great-grandfather, Roswell Schaeffer, 78, trailed behind. What was a playground to the kids was, for Schaeffer – an Inupiaq elder and prolific hunter – a reminder of what warming temperatures had undone: the stable ice he once hunted seals on, the permafrost cellars that kept food frozen all summer, the salmon runs and caribou migrations that once defined the seasons.Now another pressure loomed. A 211-mile mining road that would cut through caribou and salmon habitat was approved by the Trump administration this fall, though the project still faces lawsuits and opposition from environmental and native groups. Schaeffer and other critics worry it could open the region to outside hunters and further devastate already declining herds. “If we lose our caribou – both from climate change and overhunting – we’ll never be the same,” he said. “We’re going to lose our culture totally.”Still, Schaeffer insists on taking the next generation out on the land, even when the animals don’t come. It was late September and he and James would normally have been at their camp hunting caribou. But the herd has been migrating later each year and still hadn’t arrived – a pattern scientists link to climate change, mostly caused by the burning of oil, gas and coal. So instead of caribou, they scanned the tundra for swans, ptarmigan and ducks.Caribou antlers are stacked outside Schaeffer's home. Traditional seal hooks and whale harpoons hang in his hunting shed. Inside, a photograph of him with a hunted beluga is mounted on the wall beside the head of a dall sheep and a traditional mask his daughter Aakatchaq made from caribou hide and lynx fur.He got his first caribou at 14 and began taking his own children out at 7. James made his first caribou kill this past spring with a .22 rifle. He teaches James what his father taught him: that power comes from giving food and a hunter’s responsibility is to feed the elders.“When you’re raised an Inupiaq, your whole being is to make sure the elders have food,” he said.But even as he passes down those lessons, Schaeffer worries there won’t be enough to sustain the next generation – or to sustain him. “The reason I’ve been a successful hunter is the firm belief that, when I become old, people will feed me,” he said. “My great-grandson and my grandson are my future for food.” That future feels tenuous These days, they’re eating less hunted food and relying more on farmed chicken and processed goods from the store. The caribou are fewer, the salmon scarcer, the storms more severe. Record rainfall battered Northwest Alaska this year, flooding Schaeffer’s backyard twice this fall alone. He worries about the toll on wildlife and whether his grandchildren will be able to live in Kotzebue as the changes accelerate.“It’s kind of scary to think about what’s going to happen,” he said.That afternoon, James ducked into the bed of Schaeffer’s truck and aimed into the water. He shot two ducks. Schaeffer helped him into waders – waterproof overalls – so they could collect them and bring them home for dinner, but the tide was too high. They had to turn back without collecting the ducks. The changes weigh on others, too. Schaeffer’s friend, writer and commercial fisherman Seth Kantner grew up along the Kobuk River, where caribou once reliably crossed by the hundreds of thousands. “I can hardly stand how lonely it feels without all the caribou that used to be here,” he said. “This road is the largest threat. But right beside it is climate change.”The Associated Press receives support from the Walton Family Foundation for coverage of water and environmental policy. The AP is solely responsible for all content. For all of AP’s environmental coverage, visit https://apnews.com/hub/climate-and-environmentCopyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – December 2025

Changes to polar bear DNA could help them adapt to global heating, study finds

Scientists say bears in southern Greenland differ genetically to those in the north, suggesting they could adjustChanges in polar bear DNA that could help the animals adapt to warmer climates have been detected by researchers, in a study thought to be the first time a statistically significant link has been found between rising temperatures and changing DNA in a wild mammal species.Climate breakdown is threatening the survival of polar bears. Two-thirds of them are expected to have disappeared by 2050 as their icy habitat melts and the weather becomes hotter. Continue reading...

Changes in polar bear DNA that could help the animals adapt to warmer climates have been detected by researchers, in a study thought to be the first time a statistically significant link has been found between rising temperatures and changing DNA in a wild mammal species.Climate breakdown is threatening the survival of polar bears. Two-thirds of them are expected to have disappeared by 2050 as their icy habitat melts and the weather becomes hotter.Now scientists at the University of East Anglia have found that some genes related to heat stress, ageing and metabolism are behaving differently in polar bears living in south-east Greenland, suggesting they may be adjusting to warmer conditions.The researchers analysed blood samples taken from polar bears in two regions of Greenland and compared “jumping genes”: small, mobile pieces of the genome that can influence how other genes work. Scientists looked at the genes in relation to temperatures in the two regions and at the associated changes in gene expression.“DNA is the instruction book inside every cell, guiding how an organism grows and develops,” said the lead researcher, Dr Alice Godden. “By comparing these bears’ active genes to local climate data, we found that rising temperatures appear to be driving a dramatic increase in the activity of jumping genes within the south-east Greenland bears’ DNA.”As local climates and diets evolve as a result of changes in habitat and prey forced by global heating, the genetics of the bears appear to be adapting, with the group of bears in the warmest part of the country showing more changes than the communities farther north. The authors of the study have said these changes could help us understand how polar bears might survive in a warming world, inform understanding of which populations are most at risk and guide future conservation efforts.This is because the findings, published on Friday in the journal Mobile DNA, suggest the genes that are changing play a crucial role in how different polar bear populations are evolving.Godden said: “This finding is important because it shows, for the first time, that a unique group of polar bears in the warmest part of Greenland are using ‘jumping genes’ to rapidly rewrite their own DNA, which might be a desperate survival mechanism against melting sea ice.”Temperatures in north-east Greenland are colder and less variable, while in the south-east there is a much warmer and less icy environment, with steep temperature fluctuations.DNA sequences in animals change over time, but this process can be accelerated by environmental stress such as a rapidly heating climate.There were some interesting DNA changes, such as in areas linked to fat processing, that could help polar bears survive when food is scarce. Bears in warmer regions had more rough, plant-based diets compared with the fatty, seal-based diets of northern bears, and the DNA of south-eastern bears seemed to be adapting to this.Godden said: “We identified several genetic hotspots where these jumping genes were highly active, with some located in the protein-coding regions of the genome, suggesting that the bears are undergoing rapid, fundamental genetic changes as they adapt to their disappearing sea ice habitat.”The next step will be to look at other polar bear populations, of which there are 20 around the world, to see if similar changes are happening to their DNA.This research could help protect the bears from extinction. But the scientists said it was crucial to stop temperature rises accelerating by reducing the burning of fossil fuels.Godden said: “We cannot be complacent, this offers some hope but does not mean that polar bears are at any less risk of extinction. We still need to be doing everything we can to reduce global carbon emissions and slow temperature increases.”

A Deadly Pathogen Decimated Sunflower Sea Stars. Look Inside the Lab Working to Bring Them Back by Freezing and Thawing Their Larvae

For the first time, scientists have cryopreserved and revived the larvae of a sea star species. The breakthrough, made with the giant pink star, gives hope the technique could be repeated to save the imperiled predator

A Deadly Pathogen Decimated Sunflower Sea Stars. Look Inside the Lab Working to Bring Them Back by Freezing and Thawing Their Larvae For the first time, scientists have cryopreserved and revived the larvae of a sea star species. The breakthrough, made with the giant pink star, gives hope the technique could be repeated to save the imperiled predator Juvenile sunflower sea stars at the Sunflower Star Laboratory in Moss Landing, California. At this phase, each is less than an inch wide, but they can grow to be more than three feet across as adults. Avery Schuyler Nunn Key takeaways: Recovering sunflower sea stars by freezing them in time Ravaged by infectious bacteria, sunflower sea stars literally wasted away across the Pacific coast of North America—and their resulting population crash destabilized kelp forest ecosystems. Scientists pioneered a cryopreservation technique on the closely related giant pink star, raising hopes that a bank of frozen sunflower star larvae could one day be thawed in the same way and released into the wild. Along a working California harbor, where gulls wheel over weathered pilings and the old Western Flyer—the ship John Steinbeck once sailed to the Sea of Cortez—sits restored in its berth, researchers buzz about in a modest lab tucked between warehouses and boatyards. Inside, amid the hiss of pumps and the faint smell of brine from seawater tables, a scientist lifts a small vial from a plume of liquid nitrogen, its frosted casing holding the tiniest flicker of hope for a species on the brink. Each of the 18 vials contains between 500 and 700 larval giant pink sea stars. At this stage, they are tiny specks suspended in seawater, invisible to the naked eye. These particular larvae have been cryopreserved and stored at roughly minus 180 degrees Celsius since March. At the Sunflower Star Laboratory (SSL) in Moss Landing, California, scientists thawed the larval pink sea stars and coaxed them to successfully develop into juveniles this summer—a first for any sea star species. In October, the scientists thawed another batch of larvae from the same cohort to test larval growth and survival under different freezing conditions and thawing protocols. The breakthrough, however, isn’t really about the giant pink star, a species that’s common in the wild. Instead, these larvae serve as a crucial stand-in for the far more imperiled sunflower sea star (Pycnopodia helianthoides)—a vanishing species for which larvae are precious, limited and increasingly difficult to obtain. Perfecting cryopreservation methods on pink stars—ensuring they can survive freezing, resume feeding and grow into juveniles—lays the scientific groundwork for facilitating a return of Pycnopodia. The contents of a thawed vial are placed under a microscope to assess viability of the larvae. Avery Schuyler Nunn The discovery arrives at a precarious time, as sunflower stars have disappeared at a pace rarely seen in marine ecosystems. As a mysterious pathogen ravaged their population along the western shores of North America beginning in 2013, the creatures collapsed from an estimated six billion individuals to functional extinction in parts of their range—all within just a few years. Their loss left kelp forests with dramatically fewer predators, destabilizing ecosystems across the Pacific coast and allowing urchins to proliferate and graze formerly lush underwater canopies into barren rock. Now, scientists hope that “freezing” their larvae will offer a new avenue for bringing the species back. “Cryopreservation is particularly important on the population level when thinking about recovery for this endangered species, because it had major population losses,” says Marissa Baskett, an environmental scientist at the University of California, Davis, who was not involved in the project. The process lets scientists preserve the sea stars’ existing genetic diversity for future reintroduction to the wild, she adds. “Especially given the uncertainty about different disease outbreaks, having that stock to return to is incredibly valuable.” A mysterious and “complete collapse” Sunflower sea stars have long lived in abundance up and down the rugged Pacific coast—from Alaskan archipelagoes to Baja California. The 24-limbed echinoderms sprawled across the seafloor in shades of ochre, crimson and violet. Among the fastest-moving and largest of all sea stars—capable of stretching nearly three feet across—these radiant predators coursed through kelp forests, voraciously hunting purple sea urchins and preventing them from over-grazing on the holdfasts that root towering golden canopies of kelp. An adult sunflower sea star has 24 limbs and can be more than three feet wide. This one was photographed off Point Dume State Beach near Los Angeles. Brent Durand via Getty Images “In Northern California and Oregon, there historically would have been multiple keystone predators within the kelp forest ecosystem who are punching on purple urchins and keeping their population in check,” says Reuven Bank, board chair of SSL. “But the southern sea otter was extirpated across its historic range, so we were left with sunflower stars being the last major keystone predator of purple urchins across over 100 miles of coastline.” “And sunflower stars didn’t just eat urchins, they scared them,” Bank adds. “Urchins can smell a sunflower star approaching, and in healthy kelp forests they hide more and graze less. Even without consuming them, sunflower stars helped keep urchin behavior, and therefore kelp forests, in balance.” Then, in June 2013, tidepool monitors along Washington’s Olympic Peninsula documented an unprecedented sight. The once-sturdy sea stars had turned soft, pale and contorted, their arms curling and detaching from their bodies. By late summer, the same mysterious affliction had surfaced in British Columbia, and it began sweeping both north and south with startling speed. The emerging epidemic, which caused the invertebrates to literally disintegrate, would soon be known as sea star wasting disease. An infamous marine heatwave—nicknamed “The Blob”—had settled over the Pacific by 2014, thrusting the coast into a fever. Ocean temperatures spiked, likely speeding up the disease progression in already stressed sea stars and leading to higher mortality. In the warm, stagnant water, infected sunflower stars dissolved at an eerily rapid pace, leaving behind ghost-white films of bacterial mass where the vibrant predators had been just days before. “You’d have apparently healthy stars basically melt away into puddles of goo within 48 hours,” says Andrew Kim, lab manager at SSL. “It happened so quickly, and I don’t think folks were prepared for the ensuing ecosystem shift. You don’t often expect diseases to come through and totally reshape ecosystem dynamics within such a short period. But that’s what we saw.” Without sunflower sea stars to keep those spiny purple urchins in check, the balance began to falter, setting the stage for an unprecedented chain reaction. Urchin populations skyrocketed, grazing on kelp without limits, and once-thriving underwater forests collapsed into barren rock. A dense group of purple sea urchins, which exploded in population after the sunflower sea stars disappeared, photographed near Mendocino Headlands State Park, north of San Francisco. Brent Durand via Getty Images In California, with 99 percent loss, sunflower sea stars are now considered functionally extinct. “Even though there may be a few remnant individuals left, they can no longer fulfill their historic role in the ecosystem,” Bank says. As sunflower stars unraveled in the wild, another species—its thick-armed cousin, the giant pink star—offered an unexpected foothold for hope. The pink stars share a nearly identical geographic range and life history with sunflower stars, and crucially, their larvae can be raised in aquaria. If scientists could learn to freeze and revive the pink star in its early life stages, they wondered, could that knowledge become a lifeline for the sunflower star? That’s where the small team in Moss Landing stepped in. Freezing sea stars for the future What these scientists did was something no one had ever pulled off with a sea star. Working with giant pink stars, researchers spawned adults at the Aquarium of the Pacific in Long Beach, California, fertilized their gametes to produce thousands of larvae, and shipped those microscopic bodies to the Frozen Zoo—a cryopreserved archive of creatures operated by the San Diego Zoo Wildlife Alliance. There, reproductive scientists plunged the larvae into liquid nitrogen, cooling them to extremely low temperatures and pausing their cells’ biological activity. The larvae, essentially frozen in time, were shielded from ice crystal damage with special cryoprotectant mixtures. Sunflower Star Laboratory researchers remove a vial of pink star larvae from an insulated cooler at around minus 180 degrees Celsius in preparation for thawing. Avery Schuyler Nunn After months in this suspended state, the larvae were sent to the Sunflower Star Laboratory where Carly Young, a San Diego Zoo Wildlife Alliance scientist who advances cryopreservation and reproductive-rescue tools, led the team in thawing the vials. She had fine-tuned the ideal way to keep the larvae alive as they returned to real-world temperatures, carefully testing more than 100 “recipes” with various warming rates, cryoprotectant dilutions and rehydration steps. The pink star larvae not only survived thawing, but have thus far lived all the way through metamorphosis into juveniles. Scientists watched the little stars settle spontaneously along the bottom of their beakers just 19 days after revival. The success prompted the team to apply the same cryopreservation protocols to sunflower star larvae from the Alaska SeaLife Center. The larvae will be frozen in perpetuity, creating the first-ever cryopreserved archive of the species—like a seed bank, but for the baby sea stars. “A famous quote from the ’70s, when the Frozen Zoo in San Diego was established, was, ‘You must collect things for reasons you don’t yet understand,’” says Ashley Kidd, conservation project manager at SSL. “We don’t know when the other shoe is going to drop and what populations are going to look like as the planet changes. So, rather than chasing ghosts around the ocean floor, we really focused on what we can do with animals that are currently under human care somewhere.” While cryopreservation itself isn’t a ready-made restoration tool, it opens the door to conserving genetic diversity of a species and banking rare lineages for potential reintroduction to the wild. In the 1970s and 1990s, researchers began testing cryopreservation of marine invertebrates with sperm and larvae, establishing the basic protocols that this team could apply to sea stars. The breakthrough doesn’t restore kelp forests by itself, but the SSL scientists note that cryopreservation creates something the conservation community has desperately needed: time. Time to hold onto genetic diversity, time to refine captive rearing and time to prepare for future reintroduction at scales big enough to matter. The ultimate test, the researchers say, will be translating the thawing process to sunflower sea stars. Carly Young, at the Sunflower Star Laboratory, looks for movement in the young sea stars. Avery Schuyler Nunn Just this summer, scientists uncovered a piece of the puzzle that had eluded them for more than a decade: the pathogen behind sea star wasting disease. In a four-year international effort, researchers traced the outbreak to a strain of the marine bacterium Vibrio pectenicida. When cultured and injected into healthy sea stars, it reproduced the telltale symptoms—softening arms, rapid disintegration and death within days. The finding, published in Nature Ecology and Evolution in August, gives recovery teams a way to test for the pathogen in labs and hatcheries, tighten quarantine measures and understand disease risks before returning captive-bred sea stars to the Pacific. “It’s massively important to know what to look for, and the fact that we are now able to test for this disease is going to be critical in advancing our ability to move forward with reintroductions and continuing the research,” notes Kim. “We’ve already been able to take fluid samples from all of our stars and get them analyzed for the presence of Vibrio pectenicida, so we’ve mobilized very quickly on the heels of development.” Paired with this new diagnostic clarity, advances in cryopreservation offer a second front in the effort to save the species. Frozen larvae can be stored for decades and offer flexibility for selective breeding of disease-tolerant traits, notes the team. Cryopreservation adds another tool to the scientists’ toolbox as they fight to prevent the species—and, in turn, its ecosystem—from wasting away. “Bringing back sunflower stars,” Bank says, “is the single-most important step we can take toward restoring kelp forest balance.” Get the latest Science stories in your inbox.

Archaeologists Are Unraveling the Mysteries Behind Deep Pits Found Near Stonehenge

Based on a comprehensive study, researchers are now convinced the shafts were human-made, likely dug during the Late Neolithic period roughly 4,000 years ago

Archaeologists Are Unraveling the Mysteries Behind Deep Pits Found Near Stonehenge Based on a comprehensive study, researchers are now convinced the shafts were human-made, likely dug during the Late Neolithic period roughly 4,000 years ago Sarah Kuta - Daily Correspondent December 10, 2025 9:59 a.m. The pits are evenly spaced around a large circle. University of Bradford In 2020, archaeologists in the United Kingdom made a surprising discovery. At Durrington Walls, a large Neolithic henge not far from Stonehenge, they found more than a dozen large, deep pits buried under layers of loose clay. The pits are mysterious. Each one measures roughly 30 feet wide by 15 feet deep, and together they form a mile-wide circle around Durrington Walls and neighboring Woodhenge. They also appear to be linked with the much older Larkhill causewayed enclosure, built more than 1,000 years before Durrington Walls. For the last few years, archaeologists have been puzzling over their origins: Were they dug intentionally by human hands? Were they naturally occurring structures, like sinkholes? Or is there some other possible explanation for the existence of these colossal shafts? Quick fact: The purpose of Durrington Walls While Stonehenge is thought to have been a sacred place for ceremonies, Durrington Walls was a place where people actually lived. In a new paper published in the journal Internet Archaeology, archaeologists report that they have a much better understanding of the pits’ purpose, chronology and environmental setting. And, now, they are confident the shafts were made by humans. “They can’t be occurring naturally,” says lead author Vincent Gaffney, an archaeologist at the University of Bradford, to the Guardian’s Steven Morris. “It just can’t happen. We think we’ve nailed it.” Chris Gaffney, an archaeologist at the at the University of Bradford, surveys the ground near Durrington Walls. University of Bradford For the study, researchers returned to the site in southern England and used several different methods to further analyze the unusual structures. They used a technique known as electrical resistance tomography to calculate the pits’ depths, and radar and magnetometry to suss out their shapes. They also took core samples of the sediment, then ran the soil through a variety of tests. For instance, they used optically stimulated luminescence to determine the last time each layer of soil had been exposed to the sun. They also looked for traces of animal or plant DNA. Astonishing' Stonehenge discovery offers new insights into Neolithic ancestors. Together, the results of these analyses indicate humans must have been involved, which suggests the pits could be “one of the largest prehistoric structures in Britain, if not the largest,” Gaffney tells the BBC’s Sophie Parker. Researchers suspect the circle pits were created by people living at the site over a short period of time during the Late Neolithic period roughly 4,000 years ago. They were not “simply dug and abandoned” but, rather, appear to have been part of a “structured, monumental landscape that speaks to the complexity and sophistication of Neolithic society,” Gaffney says in a statement. For example, the pits are fairly evenly spaced around the circle, which suggests their Neolithic creators were measuring the distances between them somehow. “The skill and effort that must have been required to not only dig the pits, but also to place them so precisely within the landscape is a marvel,” says study co-author Richard Bates, a geophysicist at the University of St Andrews, in a statement. “When you consider that the pits are spread over such a large distance, the fact they are located in a near perfect circular pattern is quite remarkable.” Researchers used multiple methods to investigate the pits at Durrington Walls. University of Bradford But who dug the pits? And, perhaps more importantly, why? Archaeologists are still trying to definitively answer those questions, but they suspect the shafts were created to serve as some sort of sacred boundary around Durrington Walls. Their creators may also have been trying to connect with the underworld, per the Guardian. “They’re inscribing something about their cosmology, their belief systems, into the earth itself in a very dramatic way,” Gaddney tells the BBC. Get the latest stories in your inbox every weekday.

Is red meat bad for you? Limited research robs us of a clear answer.

We’d all appreciate more definitive guidance. Eating a varied diet is a wise move while we wait.

Over and over, we ask the question: Is Food X good or bad for you? And, over and over, belief in the answer — whether it’s yes or no — is held with conviction totally out of proportion with the strength of the evidence.Today’s illustration: red meat. It has become one of the most-disputed issues in food. It’s so polarizing that some people decide to eat no meat at all, while others decide to eat only meat. It’s poison, or it’s the only true fuel.The latest salvo in the Meat Wars was kicked off by a new report that outlines the optimal diet for both people and planet. The EAT-Lancet Report comes down hard on red meat; its recommended daily intake is a mere 14 grams — that’s half an ounce.Read on, and the news gets worse: “Because intake of red meat is not essential and appears to be linearly related to higher total mortality and risks of other health outcomes in populations that have consumed it for many years, the optimal intake may be zero.”Note that word: “related.” It’s the source of the problem with the report and its recommendation.The EAT-Lancet report, by researchers from 17 countries, bases its recommendation solely on observational data. When you do that, meat comes out looking pretty bad. In study after study, people who report eating a lot of meat have worse health outcomes than people who eat little. Meat-eating correlates with increased risk of heart disease, some cancers and all-cause mortality.But, as always with observational research that attempts to connect the dots between diet and health, the key question is whether the meat itself, or something else associated with a meat-heavy lifestyle, is actually causing the bad outcomes.That’s a hard question to answer, but there are clues that people who eat a lot of meat are very different from people who eat a little.Let’s look at a study, published in JAMA Internal Medicine, cited by the EAT-Lancet report; it has a convenient demographic summary. According to it, people in the top one-fifth of meat eaters are different from people in the bottom fifth in a lot of important ways: They weigh more, they’re more likely to smoke, they’re not as well-educated, they get less exercise, and they report lower intakes of fruit, vegetables and fiber. On the plus side, they report drinking less alcohol. But other than that, we’re looking at a litany of markers for a lifestyle that’s not particularly health-conscious.So, to suss out whether it’s the meat that’s raising disease risk, you have to somehow correct for any of the differences on that list — and most of that information also comes from observational research, so even the confounders are confounded.Then there are the things you can’t correct for. Sleep quality, depression and screen time, for example, all correlate with some of the same diseases meat correlates with, but most studies have no information on those.All this confounding explains one of my all-time favorite findings from observational research. It comes from the same study the demographics came from (analyzed in a 2015 paper). Sure enough, the people who ate the most meat were more likely to die of cancer and heart disease, but they were also more likely to die in accidents. And the biggest difference came from the catchall category “all others,” which invariably includes causes of death that have nothing to do with meat.Basically, there’s a very simple problem with relying on observational research: People who eat a lot of meat are very different from people who eat less of it. The meat definitely isn’t causing the accidental deaths (unless, perhaps, they’re tragic backyard grill mishaps), and it isn’t causing at least some of the “all others” deaths, so we know that heavy and light meat-eaters are different in all kinds of ways.That’s where controlled trials come in.In a perfect world, we could figure this out by keeping a large group of people captive for a lifetime, feeding half of them meat, and seeing what happens. Okay, maybe that’s not a perfect world, but it would be the best solution to this particular problem.Instead, we have trials that are short-term (because of logistics and cost), and necessarily rely on markers for disease, rather than the disease itself. For that to be useful, you need a marker that’s a reliable indicator. For a lot of diseases — including cancer — those are hard to come by. For heart disease, we have a good one: low-density lipoprotein (LDL) cholesterol. So, most of the controlled trials of meat-eating focus on heart disease.If you spend some time reading those trials (and I did, so you don’t have to), you find that most of them show some increase in LDL cholesterol, although it’s generally small.A 2025 analysis of 44 controlled trials on meat found that the only ones showing positive cardiovascular outcomes had links to the meat industry, and even then, only about one in five came out positive. Of the independent studies, about three-quarters showed negative outcomes, and the remaining one-quarter was neutral.This isn’t surprising. Red meat contains saturated fat, and we have countless trials that demonstrate sat fat’s ability to raise LDL. But if the meat you eat is relatively lean, that effect is going to be small.The lesson here is that we don’t have a lot of good evidence on meat and health. The observational evidence is hopelessly confounded, and the evidence from clinical trials is woefully limited. There’s so much we simply don’t know. There may be other ways meat raises risk (leading to over-absorption of heme iron and stimulating the production of TMAO, or trimethylamine N-oxide), but there’s little definitive evidence for them. And, of course, there’s the question of what you eat instead. If you’re eating red meat instead of, say, instant ramen, that may be an improvement. If, instead, you’re cutting back on your lentils, not so much.As always, the single-most important thing to remember about nutrition is that what we know is absolutely dwarfed by what we don’t know. Which means that, if you’re making decisions based on what we do know, you could very well be wrong.So what’s an eater to do? Meat is a nutritious food. In fact, animal foods are the only natural sources of a vitamin we need — B12 — which is an indication that we evolved with meat and dairy as part of our diet. It’s very hard to know whether eating some lean meat leads to better outcomes than eating no meat, but I think some meat is a good hedge against all that uncertainty. (The ethical and environmental concerns are also important, but for today let’s focus on health.)But plant foods are also nutritious. And eating a wide variety of them is also a good hedge against uncertainty. Which means the carnivore diet — all meat, all the time! — is a pretty bad bet.Unfortunately, “uncertainty” is not a word that features prominently in the Meat Wars. Instead, we have an unappetizing combination of nastiness and sanctimony, with each camp convinced that the truth and the light are on their side.Not that this is a metaphor for our times or anything.

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