I got hit by an owl one night while calling coyotes - I was sitting in thick brush, wearing a furry bomber hat and using a mouth call that simulates a distressed rodent. I got lucky and it just grabbed the hat, but it sure surprised the hell out of me and after that I switched to an electronic caller for night hunting. After I bought a night vision rig I was astonished to learn how many owls were swooping on my sets at night.