At what age do young roosters start to develop their spurs? I've hatched 7 EE's and bought 5 other chicks (1 BO,1 RIR, 2 polish & 1 other "Rainbow layer). Of the 5 bought, 2 were polish s/r. I would really like to be able to tell if I have any roosters in the bunch. Are there any dead give aways by feathers? Right now they are a week to 10 days old of is it just too soon to tell? Thanks for any input.