Barred Owls roost quietly in forest trees during the day, though they can occasionally be heard calling in daylight hours. At night they hunt small animals, especially rodents, and give an instantly recognizable “Who cooks for you?” call.
The Great Horned Owl is the most serious predatory threat to the Barred Owl. Although the two species often live in the same areas, a Barred Owl will move to another part of its territory when a Great Horned Owl is nearby.
On a personal note, when I volunteered at an animal conservation center, there was a Barred Owl who would greet me every time he saw me with a little hoot, it was such a treat heart