Eastern Screech Owl
Megascops asio formerly Otus asio
About This Animal
SIZE: 6-10 inches; wingspan 18-24 inches
RANGE: East Montana to the Great Lakes and Ontario to the Gulf of Mexico, Northeast Mexico and Florida
HABITAT: Deciduous and mixed forest, riparian woodlands, rural agricultural areas and suburbs
DIET: Small mammals, small birds, reptiles, amphibians and a large variety of invertebrates
ON EXHIBIT: Makes appearances in Extraordinary Experience bird program in River Journey Delta exhibit
Eastern screech owls are cavity nesters and both parents are active in rearing their three to five chicks (average clutch size). They have a symbiotic relationship with blind snakes. Sometimes they catch the snakes but do not eat them. Instead, the owls place the snakes in their nests where they survive by eating the insect larvae in the nest. According to some studies, this relationship creates a greater success rate for young owls to fledge. Left to its choice the Screech Owl is a good neighbor controlling the local mice population.
Eastern Screech-Owls are active at night and are far more often heard than seen—most bird watchers know this species only from its trilling or whinnying song. However, this cavity-roosting owl can be attracted to nest boxes or, if you’re sharp-eyed, spotted in daylight at the entrance to its home in a tree cavity.