At what point does it become obvious that a chicken is a rooster? My niece hatched eggs in science class and I adopted two of them. I guess they are about 9 weeks old. If they were standard breeds I may be able to tell by now but as far as I can tell they aren't - all I know is the science teacher's brother provided the eggs - they weren't from a hatchery.
I can post pictures but I thought by now it might start to be kind of obvious and it really isn't.