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  1. Gadwall Identification, All About Birds, Cornell Lab of ...

  2. Gadwall - Wikipedia

  3. Gadwall Overview, All About Birds, Cornell Lab of Ornithology

  4. Gadwall - eBird

  5. Gadwall | Audubon Field Guide

  6. Gadwall Life History - All About Birds

  7. Gadwall - U.S. Fish and Wildlife Service

  8. Gadwall (Duck) - ID, Facts, Diet, Habit & More | Birdzilla

  9. Gadwall Diet and Size: Feeding Habits, Predators, and ...

  10. Gadwall Ducks - AnimalBehaviorCorner