The world's smallest owl, the Elf Owl is the size of a sparrow with a 9-inch wingspan. Found in both riparian and arid habitats of Southwestern U.S. and Central Mexico, Elf Owls inhabit tree cavities, abandoned woodpecker holes and saguaro cactus. Identified by its poodle-like yapping song, Elf Owls feed on invertebrates such as moths, crickets and scorpions. When threatened, Elf Owls play dead until danger has passed. Elf Owls live three to six years.