I am new to keeping chickens. Back in June, I got 9 pullets, or so I thought. It is becoming more and more apparent that at 24 weeks old, 4 or 5 of these hens are actually roosters. They crow and are becoming quite aggressive with each other. I'm hoping to benefit from the expertise of those of you more experienced chicken keepers. Not only are they not all hens, but they all ended up being mixed breeds, instead of the breeds that I was told that they are. Here are some photos. The Barred Rocks are obviously mixes, one of them is supposed to be a Black Australorp. The red one is supposed to be a Buff Orpington. So, what does everyone think? Are these roosters or hens?