Hi all. I’m new to chicken world. I have a rather assertive barred rock chick. It’s always flying and pecking at my hands when I open our brooder, always stands “on guard” in front of the other chicks under the heat plate. Once I am able to handle the chick outside the brooder it seems more friendly but otherwise just seems angry and mean to me lol. Sharing photos to try and see if anyone can help me in identifying. I bought from Wilco as a “pullet” but it seems larger than the other chicks and I keep wondering if it’s a Roo.