Here are some real-life pictures of birds to help you decide on what your character looks like. If you want more information about any of them, check out their linked Wikipedia pages.

A Peregrin Falcon.

A Brown Falcon.

An Osprey.

An Osprey catching a fish.

A Crested Goshawk.

A Crested Serpent Eagle.

A Crowned Eagle.

A Red Kite.

A Short-toed Eagle.

A Barn Owl in flight.

A Black-Winged Kite.

A Martial Eagle.

A Northern Goshawk.

A Great Grey Owl.

A Northern Spotted Owl.

A Northern White Faced Owl.