Bibliography and Citations

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Robertson GJ, R. Goudie I.  1999.  Harlequin duck (Histrionicus histrionicus). 466.  Poole A, Gill F., editors. Philadelphia: The Academy of Natural Sciences of Philadelphia and the American Ornithologists' Union.   p. 32.  Available from http://bna.birds.cornell.edu/bna/species/466/
Robertson GJ, R. Goudie I.  1999.  Harlequin duck (Histrionicus histrionicus).  Birds of North America Online.  (466)  Available from http://bna.birds.cornell.edu/bna/species/466/
Robertson GJ, Cooke F, R. Goudie I, W. Boyd S.  2000.  Spacing patterns, mating systems, and winter philopatry in harlequin ducks.  Auk.  117(2):299-307.  Available from http://www.jstor.org/stable/4089712