. The Canadian field-naturalist. Natural history. March, 1920] The Canadian Field-Natukalist 43 regularly occuring in Canada. Comparable scoters are solidly coloured dark brown without variegation except for gradual hghtenings of face, fore parts, and below,—they are entirely without bars or streaks. King Eider, Somaieria spcctabilis. Plate II, Figs. 3. 3a. The greatly enlarged bill process, coloured bright yellow, easily distinguishes the male of this species. The feathering of the fore crown and the cheeks are diagnostic in other plumages. In this species the crown feathers extend down the r
. The Canadian field-naturalist. Natural history. March, 1920] The Canadian Field-Natukalist 43 regularly occuring in Canada. Comparable scoters are solidly coloured dark brown without variegation except for gradual hghtenings of face, fore parts, and below,—they are entirely without bars or streaks. King Eider, Somaieria spcctabilis. Plate II, Figs. 3. 3a. The greatly enlarged bill process, coloured bright yellow, easily distinguishes the male of this species. The feathering of the fore crown and the cheeks are diagnostic in other plumages. In this species the crown feathers extend down the ridge of the bill as far as the rear of the nostrils, whilst the feathering of the cheeks does not extend as far as that of the crown. In other comparable eiders the the Northern Eider, Sotualcria riiollissima borealis can be shown to exist. The American Eider there- fore becomes Somateria moUissima dresseri. These two American forms can only be separated by the bill processes on the sides of the crown. In the American Eider these processes in either sex are broad and end in a well rounded instead cf a pointed tip as in the Northern and the Pacific Eiders. Pacific Eider, Somaleria v. nigra. Plate III, Figs. 2, 2a. The Pacific Eider can usually be told from the Atlantic Eider by the black V-mark on the throat similar to that of the King Eider. In occasional MALE FRONT VIEW Of BILL FEMF-' EIDERS -GENE,RA\lgo^^gfe]g LES ELDERS -G CD PCS j| Arctonetta t HI. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa
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