My magpie duck hatched out 13 of her 15 eggs, and 2 of the ducklings are pure white. Both parents have lots of black on them--so are white magpies normal, or is it possible the adults are mixed? Here is a pic of some of the babies. Here are the white babies, the smaller one was hatched today--3 days after the rest. The larger baby was hatched same day as the ducklings first pic, but was tossed out of the nest--hence the cut on it's head. She is healing fine and very spoiled. Any thoughts?