I just got some new Polish chicks and some are old enough to go out in the coop with the older birds. They used to all be together in a small brooder before I got them and so they picked on each other, so a bunch of them have no feathers on their heads and backs (although they are slowly growing back). Can they get sunburnt if they are out in the sun too long? Lol. I feel bad for their little bald heads.