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Gary Koehn — March 17, 10:42PM

What's the difference between Mallard and Northern Mallard?

Both are listed on the check list and I have not been able to find out the difference. If they are the same why do they list both?

David Suddjian — March 17, 07:41PM

Northern Mallard is a geographic form occurring widely in North America. Plain Mallard is the "parent form". There are other forms in other regions of the world. eBird checklists lists for various geographic areas commonly present a parent or overall species name (e.g., Mallard) along with one or more additional forms or in some cases subspecies that occur in the particular region of your checklist (e.g., Mallard (Northern)). If you have not identified the birds you observed to a certain form, it is fine to choose the general species name.
There is additional info here:

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