Your blacks look to be White-Headed Blacks, probably split to White (explaining the random white feathers). In the second pic, I think you have a White-Headed Chocolate Barred that is either Pied, split to White, or both. In the first pic, the one in front looks like a White-Headed...
Now that I think of it, there could also be the possibility that the male is split to Chocolate, which would mean he could have a daughter with one copy of Blue and one copy of Chocolate (females can't have two copies of Chocolate -- it's sex-linked). If that's the case, you'd get a bird that's...
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Does this depend on what else they carry in there background? We have a blue drake and a Black pied duck there first hatch of eight where one black ,one black pied, three blue and three silver. The second clutch she has six that are still alive. I think that perhaps the first two's dad...