I got 7 cochin chicks via USPS. 2 were DOA. They are a few weeks old. The survivors were all banged up- crumpled feathers, poop everywhere- they're still traumatized a week later. Will they ever start looking better? Can I "wash"them? I gave one a little haircut- as her head was still downy, and caked with gunk and bald spots. She looks good. But the others that already have tail feathers look so pathetic.