We have 3 hens and a rooster that are a year old on April1st. We got a straight run and ended up w 4 roosters and 3 hens. After getting rid of 3 of the 4 roosters, it seems there is something going on the hens now- they are really losing feathers! We are not sure if it is from the rooster or molting...or something else? We checked the hens and from what we can tell it is not mites, but to be safe we have dusted them all w diatomaceous earth. Can anyone tell by looking at these photos what is going on? We are new to keeping chickens and worry this hen with develop an infection! Help!! Should we separate her from the rest of the flock until she heals? Or separate him from the girls?Thank you so much!!