Some owls have been known to prey on chickens if they are in the area, though they are not a normal part of an owl’s diet. Those who keep chickens on their property might want to be aware of any owls in the area, as some of them do tend to go after them under the right circumstances.
The Great-Horned owl is especially fond of chickens and does sometimes prey on them if they are close by. It is hard to say whether or not different types of owls will go after chickens around their nesting area, though the Great-Horned owl has been known to.