Lyn Heideman
@heidelyn.bsky.social
I'm only here for the birds. And, as it turns out, what's good for birds is good for people, too.
More than half of all raptors are experiencing population declines. “State of the World’s Raptors" provides an original approach to setting global conservation priorities: science.peregrinefund.org/state-of-wor... (includes online chapters). Pre-order: peregrinefund.org/state-worlds...? #birds 🌎
November 19, 2025 at 1:41 AM
More than half of all raptors are experiencing population declines. “State of the World’s Raptors" provides an original approach to setting global conservation priorities: science.peregrinefund.org/state-of-wor... (includes online chapters). Pre-order: peregrinefund.org/state-worlds...? #birds 🌎
Unique in the biological world, hummingbirds create iridescence by capturing, bending, and reflecting beams of sunlight using barbules, tiny structures at the outermost parts of their feathers: www.allaboutbirds.org/news/what-is...? See also alt text. #birds
November 17, 2025 at 9:07 PM
Unique in the biological world, hummingbirds create iridescence by capturing, bending, and reflecting beams of sunlight using barbules, tiny structures at the outermost parts of their feathers: www.allaboutbirds.org/news/what-is...? See also alt text. #birds
As the last of the feathered warriors are making their way south, BirdCast's bird migration maps end tonight.
Birds will still be flying at night for a few more weeks. Please turn off all non-essential lighting between 11:00 PM and 6:00 AM as our lights disorient them, causing injuries and deaths.
Birds will still be flying at night for a few more weeks. Please turn off all non-essential lighting between 11:00 PM and 6:00 AM as our lights disorient them, causing injuries and deaths.
November 16, 2025 at 3:17 AM
As the last of the feathered warriors are making their way south, BirdCast's bird migration maps end tonight.
Birds will still be flying at night for a few more weeks. Please turn off all non-essential lighting between 11:00 PM and 6:00 AM as our lights disorient them, causing injuries and deaths.
Birds will still be flying at night for a few more weeks. Please turn off all non-essential lighting between 11:00 PM and 6:00 AM as our lights disorient them, causing injuries and deaths.
Sulfide-ore mining would permanently destroy BWCAW's ecosystem. What we risk losing: earthjustice.org/feature/boun.... At the end is a customizable letter to tell the Interior Dept, NO mining in BWCAW! @earthjustice.org also sends it. It takes minutes to save those lands & waters for generations. 🌎
November 10, 2025 at 9:28 PM
Sulfide-ore mining would permanently destroy BWCAW's ecosystem. What we risk losing: earthjustice.org/feature/boun.... At the end is a customizable letter to tell the Interior Dept, NO mining in BWCAW! @earthjustice.org also sends it. It takes minutes to save those lands & waters for generations. 🌎
...in approving the Knotty Pine logging project deep in the grizzly bear recovery zone in Kootenai National Forest. The Knotty Pine Project would have authorized logging, burning, and new road construction across more than 7,000 acres of the Yaak Valley: columbiabasinbulletin.org/federal-cour.... 🌎
November 10, 2025 at 12:41 AM
...in approving the Knotty Pine logging project deep in the grizzly bear recovery zone in Kootenai National Forest. The Knotty Pine Project would have authorized logging, burning, and new road construction across more than 7,000 acres of the Yaak Valley: columbiabasinbulletin.org/federal-cour.... 🌎
BirdCast returns in the spring, from March 1 through June 15, 2026. Until then, we wish all those feathered warriors godspeed and hope they find safe havens wherever they land. #birds
November 9, 2025 at 10:38 PM
BirdCast returns in the spring, from March 1 through June 15, 2026. Until then, we wish all those feathered warriors godspeed and hope they find safe havens wherever they land. #birds
Fall bird migration is winding down. The birds remind you to please turn off non-essential lights from 11 pm to 6 am and to close blinds. They explain: lights attract and disorient us, making us vulnerable to building collisions and other threats such as outdoor cats. And they thank you! #birds 🌎
November 7, 2025 at 10:34 PM
Fall bird migration is winding down. The birds remind you to please turn off non-essential lights from 11 pm to 6 am and to close blinds. They explain: lights attract and disorient us, making us vulnerable to building collisions and other threats such as outdoor cats. And they thank you! #birds 🌎
…wetland-building beavers, desert-adapted rattlesnakes, a young California Condor making its first flight, and more. The film also confronts the ecological impacts of dams and water overuse on the river and advocates for balance. Trailer and where to stream: theamericansouthwest.film. 🌎 #birds
October 31, 2025 at 7:53 AM
…wetland-building beavers, desert-adapted rattlesnakes, a young California Condor making its first flight, and more. The film also confronts the ecological impacts of dams and water overuse on the river and advocates for balance. Trailer and where to stream: theamericansouthwest.film. 🌎 #birds
~1 of every 4 birds migrating through the US in the fall passes through TX. The majority of NA birds travel at night to avoid predators, take advantage of cooler/calmer air, and use the stars/moon to navigate. City lights can disorient birds, however, making them vulnerable to building collisions.
October 26, 2025 at 6:11 AM
~1 of every 4 birds migrating through the US in the fall passes through TX. The majority of NA birds travel at night to avoid predators, take advantage of cooler/calmer air, and use the stars/moon to navigate. City lights can disorient birds, however, making them vulnerable to building collisions.
Sulfide-ore mining would permanently destroy BWCAW's ecosystem. What we risk losing: earthjustice.org/feature/boun...? At the end is a customizable letter to tell the Interior Dept, NO mining in BWCAW! @earthjustice.org also sends it. It takes minutes to save those lands/waters for generations. 🌎
October 25, 2025 at 9:47 PM
Sulfide-ore mining would permanently destroy BWCAW's ecosystem. What we risk losing: earthjustice.org/feature/boun...? At the end is a customizable letter to tell the Interior Dept, NO mining in BWCAW! @earthjustice.org also sends it. It takes minutes to save those lands/waters for generations. 🌎
Thanks to @elyse-k.bsky.social for recommending the film "Izembek" from @cornellbirds.bsky.social. You really have to see Izembek and the destructive path the road will cut through this awe-inspiring wilderness to understand the impact: www.youtube.com/watch?v=RkBb.... (See alt text.) 🌎
October 24, 2025 at 2:04 AM
Thanks to @elyse-k.bsky.social for recommending the film "Izembek" from @cornellbirds.bsky.social. You really have to see Izembek and the destructive path the road will cut through this awe-inspiring wilderness to understand the impact: www.youtube.com/watch?v=RkBb.... (See alt text.) 🌎
Sulfide-ore mining would permanently destroy BWCA's thriving ecosystem. Scroll through these pictures to see what we risk losing: earthjustice.org/feature/boun...? At the end is a customizable letter to tell the Interior Dept that BWCA must not be mined; @earthjustice.org also sends it for you. 🌎
October 20, 2025 at 4:42 AM
Sulfide-ore mining would permanently destroy BWCA's thriving ecosystem. Scroll through these pictures to see what we risk losing: earthjustice.org/feature/boun...? At the end is a customizable letter to tell the Interior Dept that BWCA must not be mined; @earthjustice.org also sends it for you. 🌎
...disrupting those systems and increasing birds' vulnerability to collisions with structures. >1 billion birds die in collisions with buildings annually. You can reduce the hazards from light pollution for migrating birds by turning off all non-essential lighting. (See also alt text.) #birds 🌎
October 19, 2025 at 12:42 AM
...disrupting those systems and increasing birds' vulnerability to collisions with structures. >1 billion birds die in collisions with buildings annually. You can reduce the hazards from light pollution for migrating birds by turning off all non-essential lighting. (See also alt text.) #birds 🌎
If you can't get the animal out, cut the webbing around it, put the animal and webbing in a paper bag/box (with air) to keep it calm, and take the whole package to the nearest wildlife rescue/rehab.
Find local #wildlife rescue on the Animal Help Now website: www.ahnow.org. (See alt text.) #birds
Find local #wildlife rescue on the Animal Help Now website: www.ahnow.org. (See alt text.) #birds
October 17, 2025 at 2:21 AM
If you can't get the animal out, cut the webbing around it, put the animal and webbing in a paper bag/box (with air) to keep it calm, and take the whole package to the nearest wildlife rescue/rehab.
Find local #wildlife rescue on the Animal Help Now website: www.ahnow.org. (See alt text.) #birds
Find local #wildlife rescue on the Animal Help Now website: www.ahnow.org. (See alt text.) #birds
Migration is still light along the Pacific Flyway.
Get updates on local bird migration: birdcast.info/migration-to.... (See also alt text.)
Be a bird hero: dim or turn off unnecessary lighting from 11 pm-6 am every night and treat your windows. Learn more: www.stopbirdcollisions.org? #birds 🌎
Get updates on local bird migration: birdcast.info/migration-to.... (See also alt text.)
Be a bird hero: dim or turn off unnecessary lighting from 11 pm-6 am every night and treat your windows. Learn more: www.stopbirdcollisions.org? #birds 🌎
October 15, 2025 at 10:50 PM
Migration is still light along the Pacific Flyway.
Get updates on local bird migration: birdcast.info/migration-to.... (See also alt text.)
Be a bird hero: dim or turn off unnecessary lighting from 11 pm-6 am every night and treat your windows. Learn more: www.stopbirdcollisions.org? #birds 🌎
Get updates on local bird migration: birdcast.info/migration-to.... (See also alt text.)
Be a bird hero: dim or turn off unnecessary lighting from 11 pm-6 am every night and treat your windows. Learn more: www.stopbirdcollisions.org? #birds 🌎
Following Oct. 6, 2023, and Sep. 25, 2025, BirdCast had it's 3rd billion-birds night on Oct. 8, 2025.
1.25 billion birds flew that night, making it the biggest night of migration yet recorded.
How to read the live bird migration map: birdcast.info/migration-to.... (More in alt text.) #birds
1.25 billion birds flew that night, making it the biggest night of migration yet recorded.
How to read the live bird migration map: birdcast.info/migration-to.... (More in alt text.) #birds
October 13, 2025 at 6:57 AM
Following Oct. 6, 2023, and Sep. 25, 2025, BirdCast had it's 3rd billion-birds night on Oct. 8, 2025.
1.25 billion birds flew that night, making it the biggest night of migration yet recorded.
How to read the live bird migration map: birdcast.info/migration-to.... (More in alt text.) #birds
1.25 billion birds flew that night, making it the biggest night of migration yet recorded.
How to read the live bird migration map: birdcast.info/migration-to.... (More in alt text.) #birds
Plant native, dim lights at night, make windows visible, don't use pesticides, restrain pets, avoid plastics, and purchase sustainable foods. More information: www.migratorybirdday.org/conservation.... (See also alt text.) #birds 🌎
October 11, 2025 at 7:04 PM
Plant native, dim lights at night, make windows visible, don't use pesticides, restrain pets, avoid plastics, and purchase sustainable foods. More information: www.migratorybirdday.org/conservation.... (See also alt text.) #birds 🌎
...using their 9 1/2-ft wings to explore the area and finding safe ledges to roost on at night, safe from ground predators. Milagra, released last year, has also been seen in the area with her flock. Photos & video from the event: peregrinefund.org/help-condors. #birds #condors
October 11, 2025 at 3:10 AM
...using their 9 1/2-ft wings to explore the area and finding safe ledges to roost on at night, safe from ground predators. Milagra, released last year, has also been seen in the area with her flock. Photos & video from the event: peregrinefund.org/help-condors. #birds #condors
To protect migratory birds in your area, please turn off all non-essential lighting between 11:00 pm and 6:00 am: turn off/dim non-essential exterior building lighting; close curtains or blinds; and avoid illuminating lobbies, plants, or fountains that may attract birds. (See also alt text.) #birds
October 3, 2025 at 6:53 PM
To protect migratory birds in your area, please turn off all non-essential lighting between 11:00 pm and 6:00 am: turn off/dim non-essential exterior building lighting; close curtains or blinds; and avoid illuminating lobbies, plants, or fountains that may attract birds. (See also alt text.) #birds
Bird migration is still heavy on the Atlantic & Mississippi Flyways and is picking up on the Central & Pacific Flyways. Find out if birds are flying over your city here: birdcast.info/migration-to.... And between local sunset to sunrise, watch the action live here: birdcast.info/migration-to....
October 3, 2025 at 6:53 PM
Bird migration is still heavy on the Atlantic & Mississippi Flyways and is picking up on the Central & Pacific Flyways. Find out if birds are flying over your city here: birdcast.info/migration-to.... And between local sunset to sunrise, watch the action live here: birdcast.info/migration-to....
--not endangered--under the Endangered Species Act. Only ~1,170 to 1,610 are left, all in SW Washington and W Oregon, and most of their natural prairie habitat is gone. USFWS now has a year to reconsider whether the Larks deserve the full protection of an endangered listing. (See alt text.) #birds
October 2, 2025 at 9:14 PM
--not endangered--under the Endangered Species Act. Only ~1,170 to 1,610 are left, all in SW Washington and W Oregon, and most of their natural prairie habitat is gone. USFWS now has a year to reconsider whether the Larks deserve the full protection of an endangered listing. (See alt text.) #birds
The biggest night of migration yet recorded by BirdCast happened on Sept. 26, 2025: 1.2 billion birds in flight, breaking the Oct. 6, 2023, record of 1 billion birds. More on BirdCast: birdcast.info. How to read the live bird migration map below: birdcast.info/migration-to.... #birds
October 2, 2025 at 7:28 PM
The biggest night of migration yet recorded by BirdCast happened on Sept. 26, 2025: 1.2 billion birds in flight, breaking the Oct. 6, 2023, record of 1 billion birds. More on BirdCast: birdcast.info. How to read the live bird migration map below: birdcast.info/migration-to.... #birds
the Eagle's beak continues to slowly regrow (see below). Keratin, the fibrous protein forming the beak, is coming in on the sides and over the top of the beak. It will likely take another year to determine if the beak will be fully functional. More on WBS: www.worldbirdsanctuary.org. #birds
October 2, 2025 at 7:10 PM
the Eagle's beak continues to slowly regrow (see below). Keratin, the fibrous protein forming the beak, is coming in on the sides and over the top of the beak. It will likely take another year to determine if the beak will be fully functional. More on WBS: www.worldbirdsanctuary.org. #birds
Live BirdCast migration map @ 12:00 am EDT: Radar is picking up 1.1 billion birds in flight, notably along the Mississippi Flyway. (See alt text.)
Be a bird hero. Dim/turn off unnecessary lighting and close blinds from 11 pm-6 am every night to prevent window collisions: www.stopbirdcollisions.org?
Be a bird hero. Dim/turn off unnecessary lighting and close blinds from 11 pm-6 am every night to prevent window collisions: www.stopbirdcollisions.org?
September 26, 2025 at 4:27 AM
Live BirdCast migration map @ 12:00 am EDT: Radar is picking up 1.1 billion birds in flight, notably along the Mississippi Flyway. (See alt text.)
Be a bird hero. Dim/turn off unnecessary lighting and close blinds from 11 pm-6 am every night to prevent window collisions: www.stopbirdcollisions.org?
Be a bird hero. Dim/turn off unnecessary lighting and close blinds from 11 pm-6 am every night to prevent window collisions: www.stopbirdcollisions.org?