A neighbor has been having his ducks and chickens killed, so I put a camera in his chicken coop. Can't figure out yet how something could get inside, but here's a pic (I aimed the camera at the shelf where the last kill was found; those are nesting boxes underneath). The killing has slowed down, but not stopped, after he thoroughly stapled the chicken wire all the way around the coop. About 21 chickens and ducks killed so far. It is killing their egg business!
At this time the plan is 2 fold. 1) He has a catch alive trap. I figured maybe bait it with cat food. 2) I wait and watch through thermal some evenings from his back porch.