This is my first time raising Ameraucanas, and I know these chickens have some unusual traits, but I haven't read anything about early sexual maturity. I have 2 cockerels and 7 pullets; they're 11-1/2 weeks old. Both the guys have already started crowing, one last week, one today. I'm told this is not particularly unusual. My question, and concern, is -- are my pullets likely to start laying soon? This seems way too young -- half the age of even a Leghorn.