I got up late this morning because I have been under the weather. So, unfortunately I let my chickens out of the coop an hour later than usual. A little after they were let out in their run I saw one of my so called "hens" chasing my cochin, pinned her down and was pecking at her. I was watching this behavior from my window so I couldn't tell whether she/he was on top of the cochin. I went out to the pen and he/she was chasing her again. Could this be that they were locked up too long, just chicken behavior, or is my hen a roo? The EE in question is 23 weeks and the blue cochin is 22 weeks. Maybe you can tell from my pix below whether I have a roo or hen. Thanks for the help. I am a new chicken Mom and don't know about such things. BTW none of my "hens" have started to lay.