I thought maybe they were bored and pecking at each other--I have given them things to keep busy with, checked for bugs--found none but sprinkled bug stuff (don'tknow the name--like sevin dust) anyways, but now one hen is completely bald on her chest, and some are bald on there butts. Smooth as a baby's bottom. i am totally convinced now they are molting. Have added stuff to their water, for this and to prepare them for the introduction to the new birds, but my concern lies with the thought that is going to get 'real ' cold again and they don't have alot of feathers to keep warm. What's a chicken mom to do?