Fork-tailed flycatchers make a fluttering sound with their wings—but separate subspecies have different “dialects” of fluttering. Christopher Intagliata reports. Charles Darwin is most famous for his ...

Vanya, curator of birds and mammals at the Cornell University Museum of Vertebrates, studies a turkey vulture wing at the Cornell Lab of Ornithology. — Photos: BRYAN ANSELM/The New York Times Vanya ...

More than 99% of birds can fly. But that still leaves many species that evolved to be flightless, including penguins, ostriches, and kiwi birds. In a new study in the journal Evolution, researchers ...

"The introductory chapters give a detailed overview of the feather - how feathers developed, the parts of a single feather, and the variety of types of feathers on a bird. In the feather ...

Explore the colors of songbird migration in a photo essay that displays the ways distance and timing affect plumage. In late summer and autumn, millions of birds fly above our heads, often at night, ...

Feathers are a sleek, intricate evolutionary innovation that makes flight possible for birds, but in addition to their stiff, aerodynamic feathers used for flight, birds also keep a layer of soft, ...

Fossilized feathers of an extinct bird show it molted differently than modern birds. The prehistoric bird lost its feathers all at once, while many modern birds molt in waves. Regrowing feathers uses ...