Key mutations and animal spread could raise the risk to humans. Bird flu is spreading. The avian influenza virus H5N1 has ...

The tiny particles are widespread in waterbirds around the world. Now, research is finding them in neighborhood songbirds, ...

A flutter of blue and yellow darts through a field in late May. Trees, shrubs and summer flowers fill the landscape. A ...

After tracking patterns migration, scientists found that bald eagles are operating on a schedule different from their other ...

Scientists once believed birds relied only on flight, talons and socialization for survival. But this one proves otherwise: ...

Birds fly in a V formation to save energy. The bird in front creates lift for those behind. This teamwork makes long flights ...

This Christmas Bird Count, we salute the fabulous, underappreciated, common species. Here's to you, house sparrow.

Common birds—those with relatively large, widespread populations—are facing some of the steepest downturns. The data ...

Simulation finds quarantining is most effective in controlling human spread as long as it is done when number of infected people is as low as two ...

The seasonal sleigh bells are a’ jinglin’, and for some hawk-eyed observers around the Bay, that means it’s time to dust off ...

After theorizing on the fossilized bird’s cause of death, the paleontologists decided on the new species’ name: Chromeornis ...

Finding that vampire bats along Peru’s coast carried H5N1 antibodies raises concerns that multiple bat species could become ...