Cute chicks. I think it may be a male, just based on the pinkness of the comb, but its feet are a bit small for a male, but then again I don't know much about purebreds. Or whatever breed that is. Also the wing feathers seem to be following a male pattern of development, as in the primaries aren't sticking out from behind the secondaries or coverts or whatever they are... But that varies between breeds too. But compared to the others it looks possibly male.
Also the dark one with a golden head has typical male carriage and it's got its little tail as upright and fanned out as possible, I think that might be a roo too. Not 100% sure of course, and some girls act like roos a lot, complete with the fighting. And the mating, sometimes. I had a bunch of Isabrown hens who would always mate with the pekin mix hens, and a dorking welsummer mix who fought seven brother roosters in a row, beat all of them, and then mated with all of them... With her on top. The roos squawked just like hens, but crouched and moved their tail feathers out of the way just like hens, too... And all these sexually confused hens went on to be good mothers, prolific layers, etc. Very strange! Think it was just a testosterone overdose for some reason.
