since the cold weather, my DH has taken over our 5 BRs and the other day, he brought in their waterer to refill. I noticed there was blood! I figured it was from their combs bleeding. I went to the coop today to refill food and noticed blood on the feeder too! Alot of it.... is this normal? It's cold out but is there something i can do to keep their combs moist??? THanks!