Ok, I have a picture, and would like to share it, but work settings are preventing me. No matter, I think I can describe it. My 2 year old, otherwise seemingly healthy, BLRW, has either lost or plucked the feathers from the underside of her neck. It's been cold, and I'm sure it's a bit drafty. I THINK her poops might be a bit on the cow-pie side, but I can't tell for sure whose poop is whose on the poop board. My 5 other hens are fine. Feeding scratch and a little crumble mixed in along with the usual healthy kitchen scraps. I wormed with Wazine/Ivermectin this past Fall. My ladies are rather pampered, but I'm quite baffled as to why I suddenly now have a naked neck chicken! Ideas? Remedies? Thanks!