Black Swedish hatchling crosses

[Paymoo]

Hi all!

I’ve looked and looked for the possible outcomes, but I’m not finding specifics.

We bought 3 black Swedish ducks from a local farm that was downsizing. As far as we know they only had black Swedish and khaki Campbell.

Well we hatched some of the girls first eggs, for fun.. as I want more egg layers.

We ended up with a few yellow ducklings, what looks like a Roeun? And then 2 black Swedish.

Can someone explain the genetics of this and what I could be seeing?
I saw a comment from 2020 about a BLUE Swedish crossed with khaki but it’s a little different with black vs blue.

Thank you!

 

[Chicken_tiger_catt]

@Debbie292d

 

[KathiQuacks]

A way this could happen, and this is just the first thing I thought of, is if your Black Swedes secretly have 1 black gene, and 1 white gene. The result would be mostly black bibbed, some white, and a few mallard-like.

Basically, black and white are colors that “cover” other colors. You can have a black / white duck with all kinds of color genes, but you won’t see it, because the black / white is hiding it.

You need at least 1 black gene for black to show, but 2 white for white to show. If you get no black and either 1 or no white, the plumage tends to default to mallard-like, like it has here.

 

[Mallard_Bantam]

Perhaps they weren't black swedish, but a cross between a rouen and a pekin. That would result in a black bibbed bird that carries the gene for white and wild type colors

 

[KathiQuacks]

Perhaps they weren't black swedish, but a cross between a rouen and a pekin. That would result in a black bibbed bird that carries the gene for white and wild type colors

Not necessarily. I had Rouen x Pekin mixes, and all of them were Rouen-presenting. However, if the Pekin carried a black gene or 2, then yes, this could happen!

 

[HollowOfWisps]

I agree I don’t think the parent stock were pure Swedish, but most likely a cross.