Avian Osteology

Skull
48 mm


Sharp-shinned Hawk 36 - 48 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