Bald spots on one of my chickens.

[Ruby Mia]

one of my chickens has two bald spots on her wing and under her wing. the feathers in front of her tail on her back are also a lot shorter. we did have two cockerels, but gave our newer one away because the hens hated him as he tried to jump on them but they told him off. we lised all our chickens about a week ago and i cant see anything crawling on her. here are some pics;

her wing

her wing
under her wing
under her wing

 

[Ruby Mia]

???

 

[Irishhenman]

those are all the usuall places for over treading, make or get her a saddle for her back and try and get her one with wing guards as well. The patch under her wing is harder to protect, so I would also trim the cockerels spurs

 

[Ruby Mia]

Thanks for the reply, the cockerel isn't on her much and he has only got lumps as spurs as they havnt grown yet. we also see her pecking herself a lot, is this making it worse?