identify breed of ducklings

jessiibby

Hi. I bought two ducklings but the man I got them off was unsure of their breeds.

I have vent sexed them both and they are both boys. One is one wk old the other Is two wks old. Both are a dark brown with a yellow chest and yellow spots on the tip of each wing. Their bills are black. Their feet are predominantly black with pink patches.

Help would be appreciated.