Evans, P. R & Smith, J. G / July 1982 – vol. 75, issue 7, pp 336–337 White-headed Duck misidentified as Ruddy Duck I believe that the bird depicted in plate 3 (Brit. Birds 75: 9) is a female White-headed Duck Oxyura leucocephala and not a female Ruddy Duck O. jamaicensis. We breed these two species here at Arundel, so I am very familiar with them. In the photograph, the most noticeable characteristics are the swollen area of the bill above the nostrils, and the ... This article is only available to registered users.To read more, please log in or purchase a subscription.