Whether they’re opening for takeoff, spreading wide for a lazy soar or flapping to brake for landing, bird wings make flying look almost effortless.

"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 ...

"It's exciting to learn that the feathers of birds are evolving to shed heat into outer space to track climatic challenges," ...

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 ...

Each Canada goose that you see flying around in formation around Lancaster County these days has between 20,000 and 25,000 feathers, most hidden from sight. A typical songbird at your backyard feeder ...