We just returned from vacation and my girls look like they have a small tear in their combs. We had a house sitter that kept the water clean and fed them but knows even less about chickens then I do. Her job was really to stay with out 12 year old border collie who can't take the kennel. Back to the girls, there are a couple of spots of blood on the combs. Their hutch is heated and it rarely gets below freezing. The girls were hatched in mid August. Question is: Are they just teenagers or show I take them to the vet?