For a few weeks now I have been finding long feathers in the coop. I have been trying to find out who they are coming feom but am not sure. They seem to be from at least three different chickens, maybe more. I can't figure out what's going on - all the chicks look fine, except one or two that have some feathers on their back towards the tail that seem to have a V cut out of them, and the rooster has a lot of down showing at the basebof his tail... a lot of the feathers could possibly be his. I never see anyone plucking anyone's feathers though - when I am around they all behave just fine, though I have on occasion seen chicks trying to eat a feather... They should not be short on protein, they get a good feed and extra mealworms, yoghurt and greens. How can I figure out who's doing this? Or is finding ten or so feathers a day from 15 chicks pretty normal? They are twelve weeks old now. Thanks!!