My flock is presently around 3.5 months old. I have NH reds, BR's, & Pearl white leggies. Out of a hatchery batch of about 30, I wound up w/two, possibly three roosters. (just at 10%) Question being; When do the roo's start to show thier spurs?? I have isolated both roo's away from the hens @ 3 months of age. Not because of the spurs, but many people I associate w/do not desire fertile eggs.