I have a couple of female golden coturnix quails in the same cage with 6 brown ones, and they are of the same age out of the same batch of hatching. They are about 5-6 weeks of age. Today, I came home and thought one of the golden ones looked funny, and it took me a little while to figure out it is because all the feathers at the tail are gone, and the tip part of the butt is gone also, with fresh blood and possibly some inside coming out. It looks as if someone hacked off half of the butt, and the body length became much shorter (therefore looked strange when I first looked at her without paying attention to her butt). I do not see any other injuries on her. It was really saddening to see it. I moved her to a hospital cage for now, and am not sure if she will make it. I am just wondering if others see similar kind of injury on quails before? Most injuries I have seen due to fights are usually on head or neck area, and I never see such severe injury on the butt. I know quails have gland on the butt, can they target these gland at this age? The quails are in a well built cage, and there is no way for predators to get hold of them. Thanks in advance.