Hi, I recently purchased four baby chooks who are now 4 days old. They are living in a reasonably sized box with a lamp to keep them warm, plenty of food, water, etc... One of them has started losing patches of feathers (not big patches) all over her body. She is also pecking at herself in the areas minus feathers. Is this lice? And why don't the others have it? Also, do the chicks need a spot away from the light to sleep? Or are they fine with the light 24/7?