Our chicks are now six weeks old and we try to guess each day which will be hens, which will be roos. They are mutts that we hatched in an incubator. I'll try to post pics later, but can anyone tell me for now if they've ever had a chicken that has almost no comb or wattles, but has ear tufts, fast feathering and is large in size start to "crow" at five weeks? I have two others who look much more like roos but do not crow, but this one is clearly the dominant bird though it looks nothing like a rooster! As a matter of fact "she" looks just like Grandpa Munster! Breeds in the breeding barnyard included Araucana, White leghorn, Plymouth Rock, Black Australorps, Buff Orpingtons and Delawares. Ann and Jill, who daily chant, "Be a hen... be a hen... be a hen..."