Black duckling??? How??

[AAcres]

So I have a mixed flock of khaki campbells and Indian runner ducks. These are my babies:

I just hatched some ducklings from them and it’s fun (for me lol) to try and figure out what babies came from what pairing. Here’s where I’m confused. I have a duckling born from a khaki Campbell egg that is pretty much black.
Is my tall runner male the dad or the khaki Campbell male?? I wouldn’t think the khaki Campbell male as khaki ducklings aren’t black.
But the other ducklings born from khaki eggs have yellow on their faces so I assume those ones are crossed with Indian runner.
So where does this black one come in??
Any one have any ideas?

 

[Isaac 0]

@Pyxis

 

[TomCahalan]

The runner is the father. If the father is chocolate then the duckling will be too. If he is black then the duckling will probably be black, unless he carries a chocolate allele and passed it on.

Use this tool to see the possible combinations: http://kippenjungle.nl/kruisingEend.html

 

[AAcres]

The runner is the father. If the father is chocolate then the duckling will be too. If he is black then the duckling will probably be black, unless he carries a chocolate allele and passed it on.

Use this tool to see the possible combinations: http://kippenjungle.nl/kruisingEend.html

Hey thanks! The chocolate runner in the picture is female
I’ll check out the link.