I hatched out 10 chicks about 9 weeks ago. Today, I heard one crow, so I know I have at least one cockerel in the bunch, but I think it's more like 4. I have one that is black with a rose comb and has white spots all over. He already has LONG tail feathers and is very obviously a cockerel. He's also chasing the pullets around some too, so he entering the teen age stage. If he behaves, I'll keep him. If not, I'll process him with the others. I already have two great roosters that are not human aggressive, so I don't really need a third. Just thought I'd give him a try because he's so pretty. He's a mix of polish, black sex link and white leghorn.