We have been fighting an unknown predator for 3 weeks. We rotate our chickens in several fenced garden areas. At first we suspected a hawk since our bantams were targeted. Only a few feathers being left on the ground. Then, as our standards were targeted, we noticed a gap in part of the back fence. Then, we thought fox. By this time 5 chickens were gone: 2 bantams and 3 standards in 2 weeks. We placed the chickens in a more secure run and up went the game camera. This week, 3 more hens went missing during the day. Also, my roo kept coming down to the house at dusk to roost. He jumps the 5 ft fence and refuses to walk back to the coop (even when enticed with treats). Jumping the fence and leaving his girls is not typical behavior for him. Late yesterday afternoon, we put our roo back into the run 3 times. On our 4th trip to the run, we heard the hens squawking. We made it to see a feral cat jump the fence and run into the woods. A bantam was separated from the flock but seemed to be ok. Could one cat have such an appetite? That is 5 standard hens and 3 bantams in 3 weeks!