I have 18 5 week old chicks and the 5 light brahmas have these dry featherless patches on their backs. I think theyre getting pecked at... but why just the LBs? I have marans, EE's and BOs as well in there. All the same age the same shipment. I think they got pecked, i blue coated them as they were a little bloodied in some spots. The dry spots show the feather folicals as just empty holes. Theres three roos out of the bunch, 1 ee, 1 maran, and one LB. Why just the LBs? Is it from pecking? what should I do. Theyre in the barn for the night, sorry I dont have pictures. Theyre all otherwise healthy and happy.