Can I just say how excited I am to add this to my flock. 3 Duckies and 4 Surprise Chicks... I know what breed my ducks are, but I bought these 4 Chickies as a St Run Suprise from the hatchery? The brown one in the back is completely brown, even the beak looks brown. I'm thinking one a rir and one a Barred Rock. What's your guess?.