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 ...

Silas Fischer, a PhD candidate at the University of Toledo, has been studying Gray Vireos since they were an undergraduate. Gray Vireos, songbirds of the arid woodlands of the Southwest, are very, ...

For most of the year, the Willow Ptarmigan lays low on the Arctic tundra, blending into the snowy landscape with its powder-white plumage. But as winter turns toward spring, the males begin to stake ...