I agree if you have a game camera put it up because most likely once the predator has made a kill it will probably be back. We have coons, coyotes, fox, bobcat, possums and hawks and owls. Everything likes chicken.Can you put a game camera out? Would be embarrassing if a Bobcat is coming in and you going after wrong critter.
This is a coyote at one of my grow-out coops recently.