Cornell Lab of Ornithology

@cornellbirds

The Cornell Lab of Ornithology is a world leader in the study, appreciation, and conservation of birds and biodiversity. birds.cornell.edu/home/ (White-breasted Nuthatch by Hannah Criswell / Macaulay Library)

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Cornell Lab of Ornithology@cornellbirds· 27d

Did you know you can upload your field notes/sketches along with your eBird checklists? We love coming across these beautiful artistic snapshots from your birding adventures in Macaulay Library. Check out our Bird Academy sale on bird art courses + free webinars: academy.allaboutbirds.org

sketches of a blue and white bird with black wings and field notes. Text reads: Tree Swallow. Tachycineta bicolor. © Parker S / Macaulay Library.

illustration of a brown bird with streaky underside and bold black stripe on its head. Text reads: Ovenbird. Seiurus aurocapilla. © Su Delve / Macaulay Library.

Sketch and field notes of a Black Vulture and Merlin. Text reads: Black Vulture. Coragyps atratus. © Michael Kensinger / Macaulay Library.

sketches and water color paintings of a streaky brown bird with field notes written. Text reads: Lark Sparrow. Chondestes grammacus. © Brian Small / Macaulay Library.

Cornell Lab of Ornithology@cornellbirds· 29d

BIRD QUIZ: Here are a bird and its chick photographed in Michigan in early July. Do you know what species they are? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Matthew Dolkart for sharing this photo with eBird and the Macaulay Library archive.

A pale shorebird with a chick directly in front of it. The adult is sandy brown above and white below, with a black collar. The foreground and background are blurred brown, matching the adult’s upperparts. Text on image: Mystery Bird, Avis ignota © Matthew Dolkart / Macaulay Library, Cornell Lab.

Cornell Lab of Ornithology@cornellbirds· Jul 12

Did you know that the warblers we see today in North America don’t always get their bold yellow colors from their own ancestors, but from other warbler species via hybridization? To celebrate warblers we’ve got a paint by numbers free downloads available: dl.allaboutbirds.org/warbler-pain...

Cornell Lab of Ornithology@cornellbirds· Jul 9

New Living Bird magazine article: how a writer’s experiences with watching owls helped her recover from a traumatic brain injury. New studies are showing how birding can affect brain structure & foster a sense of well-being. www.allaboutbirds.org/news/birding...

Cornell Lab of Ornithology@cornellbirds· Jul 7

BIRD QUIZ: Here is a bird photographed in Colorado in early July 2021. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Johanna Beam for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A brown-and-white chickenlike bird standing in front of a green background. Text on image: Mystery Bird, Avis ignota © Johanna Beam / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Jun 30

BIRD QUIZ: Here is a bird photographed in early June in Wisconsin. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Jonathan Fisher for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A small songbird clinging to a vertical green grass stem. The bird has a heavy, thick bill and prominent yellow on the face and breast. Text on image: Mystery Bird, Avis ignota © Jonathan Fisher / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Jun 28

Behind the scenes tour for our Living Bird magazine production! The Summer issue features bright warblers, Red Cockaded Woodpeckers & more! This quarterly magazine is available in print only to our members, the articles are also free online! Become a member join.birds.cornell.edu/page/150611/...

Living Bird magazine spread with a closeup of a bright yellow bird. Text reads: A behind-the-scenes sneak peek at the newest issue of the Living Bird Magazine.

elements of a magazine page laid out in layers of black, blue, red, yellow. Text reads: Black + Cyan + Magenta + Yellow = a colorful Rufous-necked Hornbill.

stacks of open magazine pages. Text reads: Freshly printed spreads waiting to be cut.

stacks of upwardly curled magazines with photos of a yellow bird poking out of a tree. Text reads: Getting ready to meet you all soon!

Cornell Lab of Ornithology@cornellbirds· Jun 17

Grasslands support people’s livelihoods, Indigenous cultures & ecosystem functions. But they are disappearing rapidly. More than 1/2 of bird species that depend on grasslands are in steep decline. We’re proud to be part of America’s Grasslands Coalition, learn more: grasslanders.org

Cornell Lab of Ornithology@cornellbirds· Jun 16

BIRD QUIZ: Here is a trio of birds photographed in early June in Virginia, north of their normal range. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Anne Bielamowicz for sharing this photo with eBird and the Macaulay Library.

[Image description: Three ducks in flight against a blue sky. The birds are patterned in black, white, chestnut, and gray. Text on image: Mystery Bird, Avis ignota © Anne Bielamowicz / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Jun 9

BIRD QUIZ: Here is a bird photographed in Alberta in mid-June 2023. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Sydney Mohr for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A small songbird perched on a lichen-covered branch. The bird has a gray hood, olive upperparts, and yellow underparts. Text on image: Mystery Bird, Avis ignota © Sydney Mohr / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Jun 4

The final event of Welcome Back Birds is coming up. Cornell Lab experts will talk about how to bring more kinds of birds to your yard & how to keep them safe & enjoy them all summer long. Register here: hubs.la/Q048D9J90 If you registered for April/May’s live events, you don't need to re-register.

small, off-white bird with dark brown streak over its eye and a copper head stands on a sunflower with a worm in its beak. Text reads: Welcome Back Birds! How To Support Birds All Summer Long. Thursday, June 18 1-2pm ET / 10-11am PT. Chipping Sparrow © Cheryl Taylor / Macaulay Library.

Cornell Lab of Ornithology@cornellbirds· Jun 2

BIRD QUIZ: Here is a bird photographed in Nunavut in early June 2019. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Paul Jones for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A bright red shorebird resting on calm turquoise water, with its image reflected in the water. The bird has a white face and a mostly yellow bill. Text on image: Mystery Bird, Avis ignota © Paul Jones / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· May 26

Our Bartels Science Illustration Program is calling for applicants! This is a full-time, paid, in-person appointment. Residency begins in the fall and spans 6–12 months. Please note, Visa sponsorship is not available. Deadline for applications is May 29, 2026. www.birds.cornell.edu/illustrators/

Tree Swallow - blue bird with dark gray wings and white underparts. Text reads: Bartels Science Illustration Program Artist Residency. We're Hiring! May 29th Application Deadline. Swipe to see criteria or visit birds.cornell.edu/illustrators. Tree Swallow by Charlotte Holder '22.

Tree Swallow - blue bird with dark gray wings and white underparts in the corner. Text reads: Application deadline: May 29, 2026. Duration: Fall 2026-Summer 2027. Residency duration: 6-12 months. In-person position in Ithaca, New York. This is a full-time, paid temporary appointment. Please note Visa sponsorship is not available for this position.

Cornell Lab of Ornithology@cornellbirds· May 26

BIRD QUIZ: Here is a bird photographed in Michigan in mid-May. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Jocelyn Anderson for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A small songbird perched on a thin horizontal branch and surrounded by fresh green foliage. The bird is boldly patterned in yellow, black, gray, and white. Text on image: Mystery Bird, Avis ignota © Jocelyn Anderson / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· May 12

BIRD QUIZ: Here is a bird photographed in Illinois in early May. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Marky Mutchler for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A gray-and-white songbird perched on a thin branch, with bright green leaves below the bird and pink flowers behind it. Text on image: Mystery Bird, Avis ignota, © Marky Mutchler / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· May 5

BIRD QUIZ: Here is a bird photographed in Kentucky in early May 2022. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Dorian Anderson for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A songbird perched on a lichen-covered diagonal branch against a green background. The bird has brown upperparts and pale, unstreaked underparts. Text on image: Mystery Bird, Avis ignota, © Dorian Anderson / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· May 4

More than 373 MILLION birds are forecast to fly across the East Coast and eastern Midwest tonight. Help keep them safe and on track by turning off nonessential lights from 11 PM to 6 AM. Learn more about migration, window safety, and sign up to get alerts: birdcast.org/migration-to...

Cornell Lab of Ornithology@cornellbirds· Apr 30

1 day. 1 team. 1 epic bird quest. Big Day is back on May 9! Team Sapsucker will split up to count birds in Appalachia & the Maya Forest in Guatemala, spotlighting the “sister landscapes” migratory birds depend on. Help us beat last year's $1M+ raised for conservation: dl.allaboutbirds.org/bigday2026

Cornell Lab of Ornithology@cornellbirds· Apr 28

BIRD QUIZ: Here is a bird photographed in South Carolina in mid-April. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Pramod Prabhu for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A songbird perched on a thin horizontal branch against a green background. They bird has yellow underparts, olive upperparts, and black on the head. Text on image: Mystery Bird, Avis ignota, © Pramod Prabhu / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Apr 20

Our next Welcome Back Birds live session is coming up—join Cornell Lab experts to explore bird migration & can’t-miss spectacles near you. Register once to access May + June events, the April recording (all about bird songs), bonus resources & a discount on Bird Academy courses! hubs.la/Q048D9J90

[Image description: Bright blue bird with crimson and gold stripes on wings flying. Text reads: Welcome Back Birds! Thursday, May 14 1-2PM ET / 10-11AM PT. Bird Migration in your backyard. Photo credit: Blue Grosbeak © Macaulay Library]

Cornell Lab of Ornithology@cornellbirds· Apr 19

The results are in, 10/10 cats love our new video: Learn 10 Bird Songs of Spring—Common Species Across North America. Humans can learn to ID some early spring arrival bird songs by watching the full video: www.youtube.com/watch?v=y_Qt... & cats can reconnect with nature safely from your living room!

Cornell Lab of Ornithology@cornellbirds· Apr 18

What's your ideal nest? A cavity like a bluebird? Perching in an open-cup nest like a Northern Cardinal? Or bobbing in nest made from floating vegetation, like a Common Gallinule? We designed a special quiz tells you where you’d nest if you were a bird: academy.allaboutbirds.org/whats-your-i...

A Common Gallinule sitting on its nest that is made from a pile of marsh reeds that have been piled up on the water’s edge among more reeds. Words overlaying the image read “What is your ideal nest?” Photo credit: Common Gallinule © Martha Cartwright / Macaulay Library.

A nest made of grasses in a spiraling spherical shape that looks like a stereotypical nest tilted 90 degrees on its side. A bird is looking out from the side entrance hole. Words overlaying the image read “Take our fun quiz!” Photo credit: White-browed Sparrow-weaver © Eelco van Riel / Macaulay Library

Cornell Lab of Ornithology@cornellbirds· Apr 15

Peak spring migration is fast approaching & with it comes a serious threat to birds. By making simple changes to your home or building, you can help protect birds & support their incredible journeys. Visit www.stopbirdcollisions.org to learn how to make glass safer & reduce light pollution.

Cornell Lab of Ornithology@cornellbirds· Apr 14

BIRD QUIZ: Here is a bird photographed in Hawaii in early April. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Robert Hollyer for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A songbird perched on a horizontal branch with lichen-covered branches in the background. The bird is yellow, white, and gray, with a large bill. Text on image: Mystery Bird, Avis ignota, © Robert Hollyer / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Apr 11

Each spring, migratory birds travel thousands of miles—only to face deadly threats in our cities. Over 1B die in the U.S. yearly from window collisions. Dim lights at night. Treat glass by day. These simple steps save lives. Learn more: www.stopbirdcollisions.org/solutions/

Cornell Lab of Ornithology@cornellbirds· Apr 8

Not all birds use nest boxes—only species that nest in tree cavities or crevices do! 🪺 Bluebirds, wrens, and chickadees may move in, but not hummingbirds, cardinals, or goldfinches. Other birds prefer platforms or shelves instead. Find the right fit: nestwatch.org/learn/all-ab...

Cornell Lab of Ornithology@cornellbirds· Apr 7

BIRD QUIZ: Here is a bird photographed in Newfoundland and Labrador in mid-April 2021. Do you know what species it is? Leave your answer in Comments and we'll post ours at the end of the day. Thanks to Megan Buers for sharing this photo with eBird and the Macaulay Library archive.

[Image description: A gray-and-white seagull flying over dark blue ocean waters. Text on image: Mystery Bird, Avis ignota, © Megan Buers / Macaulay Library, Cornell Lab.]

Cornell Lab of Ornithology@cornellbirds· Apr 1

Happy early April Fool's Day 😜 here's the photo to help you out!

Cornell Lab of Ornithology@cornellbirds· Mar 30

Join our 3-part virtual spring series (Apr–Jun) with Cornell Lab experts! Learn bird songs, get answers to migration questions, and discover how to support backyard birds all season long. Register once for access to all events, recordings, and curated resources: hubs.la/Q048D9J90

Images of 3 birds, one bright yellow singing from a branch, another bright blue with rich brown stripes on its wings in flight, and the 3rd a brown and gray bird with a green caterpillar in its bill, perched on a sunflower. Text reads: Welcome Back Birds! Join us for the free 3 part virtual celebration of Spring migration. April-June. Bird Songs of Spring Thursday, April 9. Bird Migration From Your Backyard Thursday, May 14. Support Birds All Summer Long Thursday, June 18.

Cornell Lab of Ornithology@cornellbirds· Mar 28

Hummingbird nests are made of soft plant down, spider silk & camouflaged with lichen & moss. NestWatch tips on safely checking nests: visiting 1-2X a week for under a minute generally doesn’t affect nesting success & keeping disturbance low gives birds the best chance. nestwatch.org/learn/how-to...