Hi, just went out to check on my birds, and one was on the roost in the coop. I looked at her and all but two of her tail feathers were gone and it was really bloody around the tail stump. I immediately caught her and put her in a small dog crate INSIDE the coop. I was going to give her food and water also inside the crate. Would this be from another bird picking on her? Could she have done this to herself? I also have two ducks and 6 guineas (young though). What should I put on it? Clean it with? How long should I wait until I let her out of the dog crate to join the others? Surely not until the feathers have grown back out? Please advise, thanks.