THE courtship-display of the Goldeneye (Bucephala c. clangula) is perhaps more spectacular than that of any other duck and therefore has attracted the attention of several naturalists who have described it at considerable length. Among them I may mention F. Briiggemann (1876), J. B. Gilpin (1880), C. W. Townsend (1910), J. G. Millais (1913), W. Brewster (1923) and H. Boase (1924). J. C. Phillips (...

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