I got five red sex links a month and a half ago and about 2-3 years old. The one at the bottom of the ladder gets picked on and always has flesh exposed on her neck and sometimes shoulder. I know hens pecks at red flesh but is there something I can put on her to allow her to heal and grow feathers back?
I'd start with a bottle of blu-kote. It contains an antiseptic and will color the entire area blue, which will keep the other chickens from pecking it. http://www.tractorsupply.com/tsc/product/dr-naylor-blu-kote-pump-4-oz?cm_vc=-10005 edited to add: wear gloves, check wind direction, and be careful...it'll also make you blue for a really long time if you get it on you