Thank you all for posting this thread. I pulled what I thought were two older pekin ducklings from the straight run pekin bin at local farm supply store earlier this spring. I correctly sexed them that day after watching YouTube video. Problem now that they’re 5 months old, they both have a basal knob! It’s not large like true Chinese goose pictures I’ve seen and the girls are huge compared to my full grown silver appleyard, Swedish, and Cayuga ducks.
Know I know the basal knob grows over time, they might be Chinese, but they’re not tall and skinny like Chinese geese. Anyone have a picture of a Chinese/emden cross?