Cornell Lab of Ornithology (@cornellbirds.bsky.social)

@cornellbirds.bsky.social Sep 23, 2026, 2:56 PM

This songbird with a large head, extremely long tail, stubby bill, pale eye, and grayish-brown upperparts is a WRENTIT. To learn more visit All About Birds: www.allaboutbirds.org/guide/Wrentit/
Thanks to Quinn Diaz for sharing this photo with eBird and the Macaulay Library.

@cornellbirds.bsky.social Sep 22, 2026, 11:00 AM

BIRD QUIZ: Here is a bird photographed in California in early September. 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 Quinn Diaz for sharing this photo with eBird and the Macaulay Library archive.

Image description: A small, long-tailed songbird perched atop a charred vertical stick. The bird is grayish above and pinkish-brown below. Text on image: Mystery Bird, Avis ignota © Quinn Diaz / Macaulay Library, Cornell Lab.

@cornellbirds.bsky.social Sep 19, 2026, 3:09 PM

Scroll break! Stop for a few moments and get lost in this murmuration of Metallic Starlings in Queensland, Australia.

@cornellbirds.bsky.social Sep 18, 2026, 7:15 PM

From the fastest dive to the largest wingspan, meet remarkable raptors from around the world! 🦅 Get a sneak peek at our upcoming Wonderful World of Raptors course with this free poster, illustrated by Joel Popp. Download and print your free copy at the link below:
dl.allaboutbirds.org/raptor-poster

@cornellbirds.bsky.social Sep 16, 2026, 1:55 PM

This vireo with a stubby bill, bright yellow throat and breast, and clear black lore between the bill and eye is a PHILADELPHIA VIREO. To learn more visit All About Birds: www.allaboutbirds.org/guide/phivir Thanks to Heather Michaud for sharing with eBird and the Macaulay Library.

@cornellbirds.bsky.social Sep 15, 2026, 11:00 AM

BIRD QUIZ: Here is a bird photographed in Nova Scotia in early September. 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 Heather Michaud for sharing this photo with eBird and the Macaulay Library archive.

@cornellbirds.bsky.social Sep 14, 2026, 1:00 PM

Hummingbirds move too fast for most of us to see clearly. In a new Wild Birds Revealed video, filmmakers Tim and Russell Laman slow things down for an up-close look at Costa’s and Anna’s Hummingbirds—their flight, feeding, and relationship with flowers. Watch: bit.ly/4x3tn71

@cornellbirds.bsky.social Sep 12, 2026, 8:19 PM

Free Birds of the World Webinar! Diversity & Conservation of the World's Bustards, presented by members of the Bustards Without Borders team. The team just released a new Multi-species Action Plan for bustards, which grants new protections to these iconic species. birdsoftheworld.org/bow/news/bwb...

@cornellbirds.bsky.social Sep 9, 2026, 2:27 PM

This tern with dark gray wings, a brown-and-gray mantle, and a black ear spot connected to a black cap is a juvenile BLACK TERN. To learn more visit All About Birds:
www.allaboutbirds.org/guide/blkter Thanks to Harlan Stewart for sharing this photo with eBird and the Macaulay Library.

@cornellbirds.bsky.social Sep 8, 2026, 11:00 AM

BIRD QUIZ: Here is a bird photographed in Texas in September 2025. 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 Harlan Stewart for sharing this photo with eBird and the Macaulay Library archive.

Image description: A gray-and-white tern in flight against a gray background. Text on image: Mystery Bird, Avis ignota © Harlan Stewart / Macaulay Library, Cornell Lab.

@cornellbirds.bsky.social Sep 6, 2026, 5:44 PM

Join scientific illustrator Liz Clayton Fuller @ipaintbirbs.bsky.social on September 13 for a workshop that's sure to be a hoot! 🦉🎨✨ Learn to bring your owl illustrations to life with helpful guidance from Liz. Buy your tickets soon! Registration is limited: academy.allaboutbirds.org/live-event/i...

@cornellbirds.bsky.social Sep 4, 2026, 6:02 PM

Using the habitat clues in this video, can you guess which birds will be featured in our upcoming videos from Wild Birds Revealed? Wildlife filmmakers Tim and Russell Laman use stunning close-up footage to reveal what makes familiar birds extraordinary. Drop your guesses in the comments.

@cornellbirds.bsky.social Sep 3, 2026, 1:20 PM

This brown-and-buff falcon with a bold blackish mustache, long pointed wings, and a long tail is a juvenile PEREGRINE FALCON. To learn more visit All About Birds:
www.allaboutbirds.org/guide/perfal
Thanks to Peter Hamner for sharing this photo with eBird and the Macaulay Library.

@cornellbirds.bsky.social Sep 2, 2026, 8:10 PM

Free webinar alert! RSVP to learn strategies to protect and increase the biodiversity of your yard for native butterflies, moths, and other beneficial insects. All registrants will receive a copy of the recording after the event. RSVP: cornell.zoom.us/webinar/regi...

@cornellbirds.bsky.social Sep 1, 2026, 11:00 AM

BIRD QUIZ: Here is a bird photographed in Pennsylvania in early September 2024. 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 Peter Hamner for sharing this photo with eBird and the Macaulay Library archive.