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    • Molt and the basic plumage of male Harlequin Ducks. 

      Cooke, F; Robertson, G.J.; Goudie, R.I.; Boyd, W.S. (University of California Press, 1997-02)
      Using observations on 28 individually marked male Harlequin Ducks from mid-June until late November, we describe plumage changes which occur as individuals proceed from the alternate plumage through basic to the return of ...

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