Why do some female bovids have horns, whereas others don’t?
The lower bill of the hummingbird makes a nectar-drinking beak into one for catching insects.
Whales act instinctively to save seals
Even as a pet, his single interest was in ants, and he never quite got used to a tame chimpanzee.
Are double-crested cormorants overrunning their niche—or recovering from centuries of suppression?
A Paleontologist's Rendezvous with History and Prehistory in St. Louis
Characteristic facial expressions, postures, and movements are the key to an understanding of animal psychology and the soul of animal art.
Caudal Appendages Adapted by Nature to the Needs of Her Creatures
Observations on the Honey Guides of Africa