BlindLemonChicken
Crowing
I have had terrible rat problems in the past but they have never gone after my full grown hens. I have however seen chickens peck one another to death when stressed. Rats will dig tunnels under anything they can and if you're lucky (haha) they will build a nest. You should be able to tell if you have a problem if you find their greasy little trails. But I don't see the rats killing a full grown bird. More likely the others pecked her to death then the rats ate half of her. Or the others ate her. Definitely check for rats though.