I'm not sure what to do about this and have lost 3 chickens in the last week. I went into the coop yesterday and one of my chickens had something in her mouth that looked like meat and other chickens were following her to get it. Come to find out there was a hen in the corner and her insides were coming out and I immediately took her out. I don't know what to do I have Black Australorps, they started laying in September and we just got their chicken run built. Are they missing something in their diet? I give them oyster shells and Layena. I also give them scratch.