On my other posts some people said they thought the little brown duck I have looks like it could be a hook bill. The yellow on him goes all of the way under his stomach and his feet and legs are black. He has a little yellow lining around his bill also. If that helps. People said that the bigger duck looks like a Black Swedish. So here is some pictures of them. I think there beaks almost look the same.
The little brown duck:

The little brown duck:



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