I have 3 RIR roosters (not by choice), 1 RIR hen and 1 leghorn hen. The leghorn is the oldest and my only layer so you can guess why she is my favorite. I have only seen 1 rooster mate with only her, and he grabs onto her comb when he's doing it so it has all these little cuts on it. (Of course I knock him off when he does it in front of me). This morning I found her with a pretty big gash right behind the comb like she was pecked real hard. Why don't the roosters go after the other hen? She is almost 6 months old and still not laying so I'm thinking she feels too threatened to lay or she is just never going to lay, and that's why the rooster don't try to get on her. I know the roosters have to go....I feel bad that my 1 good hen is taking all the brunt of this and the roosters are getting more aggressive because they think there is only 1 lady for them.