A thorough exploration of the structure of feathers and their importance in taxonomy. This work has been selected by scholars as being culturally important, and

Over 400 photos of representative feathers from 379 species.

There is more to a bird than simply feathers. And just because birds evolved from a single flying ancestor doesn't mean they are structurally the same. With 385

Feathers are one of the most unique characteristics of modern birds and represent the most complex and colourful type of skin derivate within vertebrates, while