These two are both bantams, so are mini. They live peacefully in the coop together but once I let them out to free range they do an equal amount of chest bumping and hackle feather raising. I'm 90% sure the white one is a roo but he's so little and funny I've let him stay. Fingers crossed that the silky is female but they seem to be equally interested in a duel. Could they both be Roos or might I have a hen? They are both somewhere in the 12-16week range I think. Got them from a children's farm closing for the season.