Hi! I have 2 five 1/2 month old Black Australorps which I was told were pullets when we got them at 3 months old. Well, one of them, I not sure which, started crowing this morning. I have been suspicious of one of them, named Chickens by my grandson,of being a roo because of the developing tail feathers but now I am paranoid about the other one, Nancy Grace because other than the tail feathers they look exactly the same. Can anybody shed some light for me? I am relatively new at this, we just have 2 Buff Orpingtons and 1 Lavender Orpington, all of which are only 1 1/2 year old. Thanks everybody!