What ducks lay black eggs?

[Miss Lydia]

The only ducks I was aware that laid black eggs were the Cayuga, Black East Indie (BEI), and the Black Runner. In this video, he states the black egg was from his Caygua.

I have 3 blk runner never got a black egg yet. Blue here.

 

[Stoney Meadow Maple]

I wonder what happens with mixdd breed

 

[Isaac 0]

I have 3 blk runner never got a black egg yet. Blue here.

Found this:

https://www.backyardchickens.com/threads/black-eggs.825006/post-12052144

and this:


Indian Runner eggs: two from the Fawn-and-white ducks and the very dark one from a Black Runner who had just started to lay again after a short rest. You can see how easily the black pigment can be rubbed off the surface cuticle. The pale green egg is more deeply stained in the hard shell.

https://runnerduck.net/egg-colours.php

 

[Miss Lydia]

Wow that’s amazing never heard of it and never seen one from a Runner. Thanks @Isaac 0 learn something new everyday.