Hi, I have 6 chicks, ages 3 1/2 wks to 6 wks old. My issue is I have 1 bantam buff orp, 5 weeks old, who seems to be behind in the feathering dept, but is tall with a long neck and pronounced comb. This one, and only this one, keeps biting the neck of one of my other 5 wk old chicks, jumping on its back, and is just all around aggressive with all the other chicks, staring them down, flapping wings at them, chasing them, "bowing up" on them, etc. I know it's super early to tell but anyone think this might be a roo?