I have two hens that have these balding spots on their backs. Wondering if this is caused by the roosters OR are they pecking each other. Ive brought them home to try and let them heal (the red ones back was bleeding some yesterday). Once at home I noticed the red hen pecking at the other hens back spot. So now Im not sure if its the roosters or not. I thought it would be best to separate the two hens from the others until they heal up.