Hello. I have 5 chicks that are now 4+ weeks old. I don't know much about different breeds or gender identification as such a young age. I ordered females, so I assume them all are. Are my breed and gender assumptions correct? Barred Rock or a Dominque? Her tail feathers are the least developed of the 5. She is also more 'solid' and heavier than the other chicks. Rhode Island Red? New Hampshire Red? Buff Orpington (foreground chick)? White Plymouth Rock?