I forgot to close my run/coop one night and the next morning I was minus one chicken. There were some feathers in the run but no carcass. I did find two clumps of feathers in the yard 75 yards away but again no remnants of my chicken. I question if this was a coon or possum. I live in the city in a neighborhood of 1 acer lots so I'm not thinking fox etc. Any thoughts?