I bought 4 chicks a couple of months ago and housed them in a tight commercially mfg. rabbit hutch. During daylight hours three chicks were missing with feathers around the hutch. One chick dead and partially eaten from under the mesh floor of the hutch. Blood in water trough. Hutch locked and tight. Any ideas how/who could have gotten in?? Live in suburban north Jersey. BTW replaced the chicks and built a run/coop and now have 3 hens and 1 rooster. When does the rooster start crowing. Want to warn my neighbors. Joined this site to learn how to keep chickens alive during winter cold. And better coop ideas.