My 40 chicks are nearing 9 weeks of age. Shouldn't I be hearing more than ONE making the teenager sounding Erra erra arwwww sound? Granted 29 were straight run: 6 NewHampshire reds, 7 Barred Rock, 7 Ideal 236 leghorns, 2 Black Cochins, 1 black Jersey Giant, 1 gold Orp, 1 White EE, 4 Australorp mix. I hatched only on EE that looks like a hen - no comb yet and purchased 10 Australorp pullets. The only one doing any crowing is the Black Jersey Giant (bottom of feet are black). The chicks all came from a local Atwoods and were supposed to be from Ideal. The leghorns look like a crossbreed of leghorn and Delaware and Barred Rock. The Black austrolorps must be some crossbreed because they are not solid Black....many have pretty golden brown heads. Surely I couldn't be this lucky to have only one rooster and 39 hens!!!