In my flock back then I had blue and black swedes, I did have 2 female pekins but I've hatched a blue swede pekin cross before and they come out marbled with the blue coloring. I'm pretty sure that all the pekin crosses would have at least half the color of the swede drake whether that's blue or black, and don't think any of them would come out all white?
As I'm typing this I had to dig into pekin/swede crosses. It seems normally they come out marbled, but to my surprise I saw some pictures of ones that almost look entirely like pure swedes. If I didn't know better I'd think they ARE pure swedes. So it seems that maybe I had some pekin mixing going on that I was unaware of and assumed most of my flock, including the eggs that I hatched from it were mostly pure swedes. If one or more of them had pekin mix in them maybe that explains why I ended up getting those mostly white ones...? I hatched a few generations of ducks. The ones pictured would've been the 3rd or 4th generation.
I'm trying to remember how it went. When I started off my flock, I had a blue swede drake (we also had a black magpie drake but he was a turd so we didn't keep him). The second year, I bought a couple more swedes to prevent interbreeding but I also incubated a few eggs from the flock, one of the new swedes I bought was a black drake, the black drake wouldn't have possibly had any offspring until the next year. The ones I hatched from the flock that year I believe were all females, offspring of the blue drake, 1 had a crest, and I'm not sure where the crest came from cause all my other ducks didn't have one. Year 3 I only bothered to hatch a few more and 1 was a blue crested drake, he was the favorite besides my first blue drake, such a big afro. And the 4th year I hatched those mostly white ones, one of them having a crest.
So now like I said above maybe what happened was I somehow got 1 or more pekin crosses and didn't know it... and if the parents were both blue swede crosses maybe they produced 2 swede pekin crosses that came out silver. That might explain why there was such little if any blue coloring and they were mostly white with the yellow bills and feet... Holy smokes!!! ...I can't believe I didn't realize this the whole time. But I thought all the pekin crosses came out marbled so it was easy to tell.
I think we have our answer, at least for the white ducklings I hatched before. My new mystery duckling might just be silver after all...... but I'm still going to take more pictures, it's still funny that it's bill has a lot of pink (the blue on it has gotten a bit darker but it's still very pale compared to the blue siblings). There seems to just not be enough pictures of the silver ones, but especially the other colors too like lilac and lavender. If anyone out there ever gets, or suspects they have those colors in their ducklings, please take pictures so people can learn what it looks like.
And sorry for the long reply but I found it kinda amusing that I likely just figured out what those white ones actually were after all this time. Like I said in the first post of this thread it's been almost a decade since I hatched any eggs (I bought some new ducklings in 23' cause most of my old ones had died and I had no drakes left). So for 9 years I thought that was what silver swedes were supposed to look like.


Kinda crazy.