Hi there fellow Chicken Lovers!! I have 2 young Roosters. Tyson and Bruno. I also have 11 Hens ranging in age from 5 months to almost 2 years. My 2 roosters are very...aggressive. Suddenly about a week ago I noticed this hard crusted over open wound in one of my Hens. Brownie is her name. She is about 1 year old. Her feathers were all looking as if they were molting out from under her wing. I guess it would be her arm pit area. A few days later I noticed that the area had spread to her side to almost under her on the belly. I have her in a separate coop area now. At first I wasn't sure if it was a disease. Today I went out and let her mingle with the other birds. I know she has been getting lonely. She was out for no more than 3 minutes when BOTH roosters just cased her. I got them away and I am not kidding- they basically paced her and tried again. Now I am wondering if the Roosters have been rough on her. I did get some antibiotic spray that I used on her for the first time today. Is that possible? Would they cause such wounds? Is it normal for roosters to gang up for some reason on 1 particular Hen?