Long before the first birds flapped and fluttered, pterosaurs took to the skies. These leathery-winged reptiles, their bodies coated with wispy filaments paleontologists call pycnofibers, were the ...

"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 ...

Scientists examined hundreds of birds in museum collections and discovered a suite of feather characteristics that all flying birds have in common. These 'rules' provide clues as to how the dinosaur ...

Every time a hawk loses a flight feather, it faces a serious aerodynamic problem on its next landing approach. Researchers ...

Birds can fly—at least, most of them can. Flightless birds like penguins and ostriches have evolved lifestyles that don't require flight. However, there's a lot that scientists don't know about how ...