I came home from work last night, 7:30, to a Great Horned Owl inside my coop. Birds were all on the floor and all worked up. It took me a few seconds to figure out what was up. I would never have thought an owl would come thru a 30 inch pop door. It took an open door, step ladder, fishing net, 15 minutes and some perseverance to get it to fly out. Only lost an old leghorn hen to trampling. As soon as it was gone everyone relaxed, ate and went to roost. Crazy adventures!