We have a 6 month old Barred Rock Roo and noticed a few weeks ago that on his behind he is losing feathers and has red skin on his butt. Since there were feathers coming in I just thought it may be a molt, but now it is continuing further down and now up on either side of his tail as well with a scab on each side. Also noticed a small spot of green skin on the side by his tail where the feathers are missing. Is this normal? I always thought chicken skin was completely yellow. He eats well and acts just as rotten as ever. Please see the attached pics. Lice? Mites? Plucking? We have 9 hens in addition to this Roo and none of them exhibit any signs of feather loss etc. I use DE in the coop and run...should I dust with Seven or is this not a parasite? PIC #1 This is just above the vent PIC #2 This is below the vent leading to the underside PIC #3 This is on either side of the tail like where the hip would be.