I have a question about feather loss. I had gotten some chickens from a lady (1 cuckoo maran, 1 red dorking, 1 japanese bantam) They were all about 16 weeks when I purchased them. The maran was not specifically chosen by me, but by one of my kids. I had never seen a cuckoo maran in person, so I have no comparison for her. But I noticed when we got her home that she had (has) a good amount of feather loss on her rear (only her rear). During the quarantine period I checked her often for external parasites and never saw any, and none of the other birds have started anything. Also, during quarantine I had noticed that her face and comb got redder....I didn't even know that maybe they were pale (or is it just that she matured more?). She seems normal otherwise and I was just wondering what could cause this feather loss? and how long will it take her to grow the feathers back? Thanks.