I have a bald chicken. Not as in white, but she seems to be losing feathers. Her name is Dandy. She has a bald patch near her tail, and her other tail feathers seem to be thinning out. Is it possible that they are over-crowded? We have 32 ft^2 for 7 chickens. 4 of the chicks in their coop are new (well, 3 because one recently died). Could the stress be causing her to lose her feathers? Is their some sort of mite that is causing her to lose feathers? I have also noticed feather loss in some if the other chickens as well. The cold winter weather of Michigan is coming, so I am worried about them losing feathers and getting too cold. Is that an eminent problem in the winter if they don't have feathers in an area of their bodies? How should I solve this problem? Are their medications or treatments for the chickens if there are mites? We have thoroughly cleaned the coop and added new bedding to hopefully reduce problems with pests (it will at least keep them warm). What else can I do to help them? Also, is it possible for these mites or feather loss to cause death?