When you have fowl of any kind, it is the responsibility of the keeper to SECURE them in a manner that they won't be predicated. Meaning coops with no holes or cracks of any kind, vent holes with hardware cloth coverings, and runs with hardware cloth and a roof or hardware cloth cover, and also a dig bibb, meaning 12 to 18 inches of buried hardware cloth or in this case chicken wire will work. So often people want to blame the predators when they are doing what comes natural to them, eating. It is not their fault your offering them an easy meal. Killing predators has consequences...Kill a Opossum and you just stayed the death sentence of hundreds of ticks and other bugs they eat, Coyote or Fox equals more mice and rats, and if you kill Raptors not only is it illegal but once again mice rats and other unwanted critters will be given a reprieve. So secure your flocks like a responsible keeper should and does and let the predators live.