I'm curious about hawk attacks too! I've lost two chickens with not a trace or even a feather left behind. I've had a neighbor's dog get two chickens as well and so I know what THAT kind of attack looks like (subsequently they got to see what our gun looks like just in case their dog got loose again). But I wonder, is it an air predator that would leave no trace of a chicken, and can a hawk really carry off with a 10 pound chicken?!