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    • Long-term pair bonds in Harlequin Ducks. 

      Smith, C.M.; Cooke, F.; Robertson, G.J.; Goudie, R.I.; Boyd, W.S. (University of California Press, 2000-02)
      We documented the frequency of pair reunion in Harlequin Ducks (Histrionicus histrionicus) on breeding streams in Alberta, and at a molting/wintering area in southwestern British Columbia. As long as their mate is alive, ...

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