We gave our chickens a bath today to help get the build up off them and noticed one has feathers like broken off, just little stubs remain, and others that have been just pulled out leaving a bald spot. Her butt is RED, not pink, red, i don't know what kind of chicken she is, but I assume it isn't normal either way. What I should I do to help her? Is she sick? or could it just be lice or something? We got the chickens from someone who didn't care about them and lets just say, the poor chickens...