They do not build nests, although casting may form a base for the eggs. Incubation takes about 33 days. After the eggs hatch, both parents feed the young. Nestling barn owls can eat their weight in food every night. Young leave the nest at 9-12 weeks, after flight feathers develop.
Barn owls hunt open fields, flying low over the ground in search of prey.
Small birds, insects, flying squirrels and rabbits occasionally are taken.