I have 4 silkies and 4 cochins. I got them in May. ONE silkie started crowing while they were still living inside my house. No one else had made a peep, so I thought alright I have one rooster. I went to let the dog out last week and heard varies tones of crowing when I went to go look 3 out of the 4 silkies were crowing- BUT only as of last week. And ALL the cochins are quiet still, although 3 out of the 4 of the cochins look different - I'm assuming 3 are roosters but they don't make a peep?? So is it normal for there to be such a wide range on when they start to crow? When should I put nesting boxes in the coop if there is a hen? They all seem to be getting along for now at least so I can leave them as is even though I have multiple roosters?