Tawny Owl (Strix aluco)
Elf Owl (Micrathene whitneyi)
The Elf Owl is the smallest owl (5 to 6 inches long) in North America. It lives in woodpecker holes in trees and cacti of the southwestern United States and northern Mexico. It hunts for insects at night.
Great Grey Owl (Strix nebulosa)
The Great Grey Owl is the largest owl (33 inches in length) of North American owls, lives in northern forests from Alaska to central California. It has a black chin spot and an unusually long tail-about 12 inches. Its feeding and migratory habits resemble those of the snowy owl.