I have a few hens and a rooster that have lost their feathers on their back. One hen and my rooster are pretty bad. Their skin is red and looks like they have been plucking out their feathers. My rooster is losong his feathers on the top of his wing connecting to his back. I grabbed my rooster today and had a look and there were these little mites running around on him. His feathers look really ratty too, he used to be a chunky rooster with glossy white and black feathers. I suspect the same for the hens concerning the mites. The same hen and rooster (both are sussex) have lost some weight. Not sure because of the heat because I just recently lost two from the heat. Does anyone have suggestions on how to get them to gain weight? What products are there to help get rid of mites (products in Australia)? What are good worming products aswell? Wondering if my chooks may have worms aswell. I feel bad for not acting soon enough. I know there are bullies in the flock that like to pick on others and feathers endup getting pulled out. But now my rooster has it and none ofbthe hens bully my rooster. Here are is a picture of the sussex hen. I will post more pictures for all of them when my phone charges.