Still a little early. The birds aren't completely feathered out. But if you want guesses, I'd say the small red bird in front in the 1st picture could be a cockerel. The other birds in the picture look like pullets at this point. The bird in the 2nd picture also looks like a pullet. The bird in the 3rd picture is the most difficult to make a guess on but I'd lean cockerel. You won't know for sure for a few week, though.