I mean, I really do like the color, it's quite pretty, but I assumed when they molted they'd feather back in all white. They are about 3 months old (hatched in first week of March) and have been molting but it's the feathers coming in that are definitely a soft yellow so they look two toned right now but each day more yellow. Even DH noticed this morning and made a comment about it & that's not typical of him. I feed them Purina flock raiser and scratch plus they forage every day and eat plenty of grass, weeds, bugs and such. Soooo, Buttercup is beginning to look her name. I am assuming here, that it's their diet causing this or could it be something else? Has anyone else seen this in their white ducks? And will winter with less access to greens see their feathers change back to white?