DUCKS 257 



known Golden-eye, and the male has a white specu- 

 lum on the wing divided by a black bar. The white 

 crescent-shaped spot on the side of the head also 

 is larger, and comes up in front of the eye. The 

 females of the two species are much alike, but in 

 the rarer bird the bill in both sexes is shorter and 

 not so deep at the base. 



LONG-TAILED DUCK. Harelda glacialis (Linnseus). 

 PI. 29, figs. 1, 2. Length, 22 in.; bill, 1 in. ; wing, 9 

 in. ; tarsus, 1-25 in. 



A winter visitant to both the east and west coasts 

 of Scotland, and common at that season in the Hebri- 

 des, Orkney, and Shetland, In England more often 

 met with in winter on the east than on the west coast. 



Immature birds ivithout the long tail-feathers 

 are occasionally found during the winter months 

 in the estuaries and tidal harbours along the Eng- 

 lish Channel, whence they are sometimes reported 

 as Harlequin Ducks, 



In Ireland Harelda glacialis is regarded as an 

 irregular winter visitor in small numbers. 



Its breeding haunts are in Iceland,^ Lapland, 

 Spitsbergen, Novaya Zemlya, and probably a few nest 

 in the Faroe Islands, Two eggs taken in Shetland, 

 and given to Wolley as those of the "Calloo" Duck, 

 were believed by him to be those of the Long-tailed 

 Duck (see Ibis, 1865, p. 446, and Buckley and Evans' 

 "Fauna of Shetland," 1899, p. 139). 



Weight, 1 lb. 8 oz. to 1 lb. 10 oz. 



' In Iceland, Mr. C. \V. Shepherd found a Scaup-Duck and a Long- 

 tailed Duck occupying the same nest, which contained several eggs of 

 both species. (" North-West Peninsula of Iceland," p. 151.) 



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