I have a 4 month old Barred Rock, which is supposed to be a hen. Unless I'm way off base, I'm starting to think this is a rooster, although he/she has never crowed yet. I let them run around on my 1/4 acre lot and all he/she does a lot of the time is to jump on the other hens' backs and bites their neck while he/she's up there. I really don't know how chickens mate, but this is maybe what I'm seeing. The hens don't like it and some, very angrily, chase her/him away. Other just ruffle their feathers like their trying to just shake off the mess he/she made to her feathers. I don't know if anyone can tell from a photo, so I've included 2 photos--one head-on and the other a profile. This is my first time downloading a photo, so hopefully it comes out right Anyone have any ideas?