I think one might be a roo. Comb is a smige bigger and wattles seem a bit more pronounced... but I know it's still really early. They're three weeks.

This is Ginger, the one I think is a girl.

This is Buffy. My son named it Buff because, as a day old chick, it's chest seemed to be bigger.. you know. Buff. I said, lets not jinx ourself and we'll call it Buffy. Comb is bigger, wider. Waddle seems a bit bigger also. Ginger was darker and in feathers and beak when we got them and she seemed slightly larger.. not you can't tell which is bigger
This is Ginger, the one I think is a girl.
This is Buffy. My son named it Buff because, as a day old chick, it's chest seemed to be bigger.. you know. Buff. I said, lets not jinx ourself and we'll call it Buffy. Comb is bigger, wider. Waddle seems a bit bigger also. Ginger was darker and in feathers and beak when we got them and she seemed slightly larger.. not you can't tell which is bigger