Imagine zooming out on a giant family tree that includes every bird you have ever seen. Ostriches sprint across open plains, hummingbirds hover at flowers, penguins slice through cold seas, and eagles ...

Birding checklists and guide books often categorize birds based on the frequency with which they are seen. In Minnesota, a master checklist is kept by the Minnesota Ornithologists' Union (MOU), ...

In the race to save birdlife around the world, time is running out—and doing everything right still won’t be enough. Despite global conservation goals and urgent policies aimed at protecting nature, ...

New research shows mountain birds move up and down slopes to save energy, find food, and avoid competition across seasons.