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Saw-Billed Ducks
Lithograph, by Archibald Thorburn, before 1916
 

Various merganser duck species in their natural habitat, depicted with accurate anatomical form, within a serene setting. The scene includes Red-breasted merganser, Hooded merganser, Goosander, and Smew, all belonging to the merganser group, which is defined by serrated mandibles used for gripping fish.