A small animal, white terns have completely white bodies, in addition to being birds with white heads. They are long, small, and have an average lifespan of 36 years. Their legs are short and black.

'Rare unicorn': White Red-tailed Hawk accidentally captured in Wentzville The bird has a rare genetic mutation, causing its feathers to be mostly white instead of brown or black. Credit: J. C. Renzo ...