Recessive Silver gene in ducks?

Has anyone ever heard of a recessive silver gene in ducks that works that same way as said genes in Wood ducks or Mandarins? I found someone who has ducks he calls "Silver Mallards" But they are not what most people mean when they say that, I don't think. I will include pictures below. I wondered if it could be two copies of the blue gene combined with a lightening gene from the M or L series. But when I asked him about the gene he said he believed with was a simple recessive gene and that when he bred to wild type he had gotten all wild type mallards who were split to silver. This would obviously not be the case if it was two copies of blue. What do you guys think? Ever seen anything like it?

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I'm learning about this stuff. I was wondering what you meant by "This would obviously not be the case if it was two copies of blue." I thought 2 copies was what created the silver or silver-splashed white?
 
I'm learning about this stuff. I was wondering what you meant by "This would obviously not be the case if it was two copies of blue." I thought 2 copies was what created the silver or silver-splashed white?

Because if it was the two copies (homozygous) of the blue gene it would produce 100% heterozygous blue type mallards when bred to wild type, since blue is an incomplete dominant. But he said all the babies were wild type indicating it is a recessive gene, rather than a dominant gene.
 
I don’t think so. I have silver phase Welsh Harlequins and they are much larger ducks than snowy mallards. But I could be wrong.

Edit: Since you added the word “color,” I would say that the snowy mallards I saw on a hatchery website look pretty similar to my silver phase Welsh Harlequins.

Yeah, I went back and changed it to clarify. You are right that Mallards and Harlequins are completely different breeds. But I think the color Snowy in Mallards is the same as the normal silver phase Harlequin color. I might be wrong, but I thought I read that somewhere
 

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