Last February we had a case of lice go through our hen house (even though we clean it daily). All our girls lost their feathers on their butts. We figured they would grow back but they didn't, then we figured they would come back in after they molted but they didn't, I have continuly checked for mits and lice but there are non. Any ideas why their feathers haven't come back in, would hate for them to go through a really cold winter withouth them,
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