Could this obnoxious 5-week-old bird be a roo despite the lack of comb? (I'm sorry if this is a stupid question--this is my first time keeping chickens.) It is constantly chest bumping the other chicks, chasing them around the coop, and jumping on top of them. The last pic is an action shot I accidentally got today when it jumped on one of the other chicks and threw her out of the access door to the coop. Rude! Unfortunately this obnoxious thing is also my favorite, as it is the most friendly, docile, curious, and intelligent. What do you think? He/she/it?