Black khaki cambell ducklings
Is the runner black? If so....
My one month old ducklings were hatched from a dark brown Khaki, and the probable dad was 1/2 Khaki 1/2 Cayuga. So they would be 1/4 Cayuga, if the Khaki drake didn't get her.
They are at this point black. I'm waiting to see if they lighten up, but in the past my Khaki babies were a definite brown.
Do you have any other ducks around that neighbors keep? They could be part runner if the runner is dark, or they maybe are just dark and will lighten a bit.
Can you post pictures?