Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been ...

When a bird preens its feathers to clean them ... long tails—hardly the anatomy one would expect on a creature leaping from trees. Other paleontologists argued that birds did not evolve from ...

One of the more intriguing aspects of bird anatomy is their ears ... Instead, they have ear openings hidden beneath feathers, designed to capture sound efficiently while minimizing wind interference.