I got a hatchery assortment and received 5 dark brown chicks. I think they are all partridge rocks but as they get older I'm starting to question. A few of them have started growing really long wing feathers and are mostly a solid brown with small patches of lighter brown. The other ones have considerably shorter wings and a pronounced chipmunk marking. The way their wings are colored seems to be a different pattern, too. Am I just looking too far into this or are they 2 different breeds? A. B.