All my hens are about 10 months old and not an egg from them yet. That's not really the problem, though. The problem is that my Black Australorp (who is the dominant hen) started ....crowing?!.... this morning. It's not a real crow. But it's a crow-ish noise. This is a REAL BIG NONO as we're in an urban area... and roosters are illegal. We're also trying to keep a low profile. I don't have a camera today, or else I'd post pictures of her/him. Wouldn't I have known earlier?At what age do roosters crow?