All my life we only had one breed of chicken. This year I got 3 breeds.. and I have made some intresting observations. The first birds were Barred Rocks, they were the only breed for a few months and free ranged. This was 3 hens and 1 roo. Then came one buff cochin bantum hen, and 10 partridge cochin chicks.. A few months later arrived 3 Golden Polish hens and 1 roo.. This started very early last spring and the last birds arrived late July. Every night all the birds were penned up togather as I won't seprate and breed untill Feb. Every day when I let them free range, all the polish were togather in one part of the yard, while all the barred rock were togather somewhere else, the same with the bantums. Even now after beein penned for weeks with out turn out.. when I let the birds out.. they segrogate. I find this behavior very intresting and wonder if anyone else has noticed this in thier mixd flocks of pure bred birds. I also wonder if there is a true prejudice in the birds if I can't still free range and expect pure bred off-spring? I know in horses there is prejudice with some stallions.. bulls also do this so to see it in chickens isn't shocking.. however I have never heard anyone talk about it before.