I have 4 mixed breed chicks im curious about. they are four weeks old. i suspect one is a roo and am hoping the rest are girls this is the one i suspect to be a rooster its supposed to be a black australorp / EE this one is supposed to just be an EE silver laced / EE? this one is also supposed to be a black australorp / EE mix but she looks more like a girl than the other. any help one breed or gender would be much appreciated.