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Northern shoveler - Wikipedia
Northern Shoveler Identification - All About Birds
Shoveler | Diet, Habitat, & Facts | Britannica
Shoveler - Wikipedia
Northern Shoveler | Audubon Field Guide
Northern Shoveler - All About Birds
Northern Shoveler - eBird
Northern Shoveler Life History - All About Birds
Northern shoveler - Smithsonian's National Zoo
Northern Shoveler - U.S. Fish and Wildlife Service