Migratory birds in V-formations master aerodynamic principles, using air currents from leading birds to conserve energy.

Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been widely debated, paleontological discoveries and developmental biology studies ...

(WHTM) — In Pennsylvania, you may see many geese throughout the year. During the fall and winter months, you may hear them honking as they fly overhead in a V shape. When the geese are in a V ...

The three fossil specimens (from left to right), Avisaurus darwini, Avisaurus sp., and Magnusavis ekalakaensis, all of which are represented by a tarsometatarsus. They are all shown to scale with one ...