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Species, Age and Sex Identification of Ducks Using Wing Plumage

Common Goldeneye

Wing Character Male Female
Adult Immature Immature Adult
Middle and lesser coverts Entirely white over all but the most proximal secondaries A variable mixture of gray or gray-white and black over the secondaries Many feathers entirely white; others only white tipped
Greater secondary coverts Entirely white White, with or without traces of black at their tips which are often slightly frayed White with a wide black band across their tips
Notch- length 94% > 218 mm. 97% > 210 mm. 98%< 210 mm. 98% < 218 mm.
Greater tertial coverts Black, tips rounded and not frayed Black, somewhat pointed, often both frayed and faded at tips Black; tips rounded and often showing traces of gray
Tertials Shiny black; not frayed or faded Dull black; tips usually faded to gray Shiny black; not frayed or faded

JPG-Adult male common goldeneye JPG-Adult female common goldeneye JPG-Immature male common goldeneye JPG-Immature female common goldeneye

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