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Northern Prairie Wildlife Research Center

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Species, Age and Sex Identification of Ducks Using Wing Plumage

Ruddy Duck

Wing Character Adult     Immature    
Tertial coverts Broadly rounded at tips Somewhat squared at tips, appearing trapezoidal
Tertials Broad-tipped, curved and drooping Straight, often somewhat frayed at their tips
Middle coverts Rounded and smooth-edged Slightly trapezoidal, often rough-ended

JPG-Adult ruddy duck JPG-Immature ruddy duck

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