Avian Osteology

Skull
51 mm


	Cooper's Hawk 48-63 mm	Western Screech-Owl 47 - 57 mm	Eastern Screech-Owl 47 - 56 mm	Northern Hawk Owl 51-61 mm


	Long-eared Owl 51 - 59 mm	Short-eared Owl 51-61 mm	Boreal Owl 42 - 52 mm