The Unfeathered Bird

As this gallery shows, there's a lot more to a bird than just feathers.

Katrina van Grouw's The Unfeathered Bird is an illustrated book on bird anatomy that offers a unique glimpse beneath a bird's feathery surface. Each illustration is meticulously drawn from an actual specimen, so the book is scientifically accurate as well as being beautiful to look at.

The Unfeathered Bird contains over 300 drawings in total, so this gallery is just a small snapshot of van Grouw's avian compendium. Published by Princeton University Press, the book is out now.