we knew mine was a roo at a week since his comb was bigger... we waited it out still. at about 1 1/2 - 2 months he was making "boy" noises a BAWWK AAH! but at 2 1/2 months he (in my opinion) perfected his crow. ERR ERR EERRRRRRRRR! it was cute. my neighbors didnt like it though. :mad: