Ok devil's advocate. How long have you had them? How old are they? Have you actually heard all 3 separately quack? Could you have a drake in eclipse plumage?
Yes im still learning but just found a Google image of a runner duck in mallard colors that makes me excited for ducklings next year. Runner alpha drake and 2 Rouen females in the mix.
Drakes in eclipse have faded/washed out speculums... all of hers are bright blue...
