| Gadwall are common within the refuge during Spring and Fall, and uncommon during Summer and Winter. |
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| Prime Hook NWR, October 16, 2005, Canon 10D, EF 100-400mm F/4.5-5.6L IS USM |
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| Prime Hook Road, May 14, 2004, Canon 10D, EF 100-400mm F/4.5-5.6L IS USM |
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| Prime Hook Road, May 14, 2004, Canon 10D, EF 100-400mm F/4.5-5.6L IS USM |