The great tit (Parus major) is the picture-perfect garden bird. With its colorful feathers and melodic, two-note whistle, it ...

Over the past half century, researchers have established that birds evolved from dinosaurs: specifically, the theropods, the ...

A natural experiment in a national park in Patagonia shows how the return of a large predator can reshape an ecosystem. Long absent from Argentinian Patagonia due to over-hunting, pumas have returned ...