Divachick, sounds like raccoons to me as well. They are probably the most dangerous predator to backyard chickens. They can climb over, dig under or tear through chicken wire with ease. They are strong, persistant predators and are not afraid of entering a backyard. They will kill multiple birds at a time. Best to make sure the chickens are locked up tight at night and in a secure enclosure during the day. I always leave a trap set along the run to catch any critters that come by before they try to get at the chickens.