Avian Osteology

Skull
49 mm


	Cooper's Hawk 48-63 mm	Merlin 40 - 50 mm	Western Screech-Owl 47 - 57 mm


	Eastern Screech-Owl 47 - 56 mm	Burrowing Owl 43 - 50 mm		Boreal Owl 42 - 52 mm