I'm referring to the white-chested part of the duck here. Let me explain. I bought a barnyard combination from McMurray in the spring and they sent me three ducks as part of the order. That being the case, I never knew what kind I'd received. Not being an expert, I tuned in on Swedish ducks thinking I had the "black" variant. The ones I have look a lot like pictures of Blue Swedish, except they're black with a very huge white bib - about the whole front or down to where the navel would be if they had one, lol. Took me quite a while, to include getting real Blue Swedish, to realize that the bibs on all I have of those are much smaller, not at all covering the whole front. The point is, what else could the black/white ones be? Does this sound like any other breed? Maybe some Swedish really do have these big bibs? They have a few "splash" black spots on their heads, too, which I still thought was OK for a black or splash variant of Blue Swedish. I don't think they're muscovies, but they do hold their own in the company of the geese and it's the geese of all my birds they're bonded to.