We just got two chicks from our local pet shop, and they seem to be male & female (white cochin bantams). One is a little larger/taller, has a bigger comb, legs are stalkier, tail feathers are growing faster, so I'm assuming it's m&f. They are both the same age too, hatched the same date. However, they are always sparring like 2 cockerals. Do pullets do the same thing? Could both be cockerals? Or is it because the two of them are in the cage alone, it's likely they will spar with each other? I don't notice the male trying to defeat her, they usually stop after one jump at each other and go about their business.