I went inside the avairy looking for the little guy, and all that was left was the head,wings, feet and I think the heart. Watever it was it had to be small, it killed him inside a small chicken house 1.5x1.5 with a small opening and looked like it was making a nest with the feathers and hay. I have other pigeons, pheasants, cordeix etc in there and everyone else is fine at the moment. I have flight netting on the top and vinyl covered welded wire sides w/another layer of chicken wire on the sides. Nothing was ripped up or pulled. Could it be a rat?