Thank you! I have a 10 week old SS that I'm hoping is a hen!!When they are darn good and ready to crow!! lol
It's all an individual, and environmental thing depending on others roosters around, not a breed thing.
My Welsummer roo just started to try crowing a couple weeks ago at about 10 weeks old.....I have an adult rooster in an adjacent coop/run....but the other jr roos haven't tried, maybe because they are a week younger or because they are submissive to the Wellie roo......Woody is boss roo in the jr coop.
I've heard of roosters crowing at 2 weeks old.....my previous jr roo didn't start until he was about 5-6 months old.