But I think golden 300 duckling girls are light browns and yellow with light brown and the boys can be black, shades of black and yellow with black. So if she is she's a girl!
I got two ducklings from Tractor Supply (mixed batch) the dark one had one eye stripe like a mallard with the little dot under (which Rouens can have only one stripe also, even it's usually two) the light one and the dark were the same size when we got them but now a week later the light one has...