I have a very obvious 3 week old roo, Pass Out. At three weeks old he is already out to protect. He struts, walks with his neck stretched out, and chases away anything he thinks isn't okay (including the 2 week old chicks that go out during the day but weren't raised in the same brooder with him). I am guessing based on this behavior he is my only roo??? edit: I know he is a roo based on comb and wattle growth at 3 weeks old. He has very noticable pinkish red wattles already, and his comb stands up over his fuzzy head.