As more and more "historical" checklists are added to the platform, birds we've lost now mingle with those still hanging on.

Q: The amount of effort that goes into a Christmas Bird Count varies quite a bit across years and count circles. How do you deal with this issue when you calculate abundance trends? How do you know ...

Collectively, we refer to the Websites, Apps, Social Media Pages, emails, and offline business interactions as the “Services.” The Services exclude Audubon’s collection of personal information both ...

This bird is noteworthy on several counts. It lives nowhere in the world except Florida, it has a complicated social system, it has been the subject of very detailed field studies, and it is ...

Research shows that we’ve lost 3 billion birds since 1970 and the vast majority of them were migratory. Climate change is one of the biggest threats to birds and people alike, with two-thirds of North ...

The Audubon Bird Guide is a free and complete field guide to over 800 species of North American birds, right in your pocket. Built for all experience levels, it will help you identify the birds around ...

One of the loudest and most colorful birds of eastern back yards and woodlots, the Blue Jay is unmistakable. Intelligent and adaptable, it may feed on almost anything, and it is quick to take ...