. The water birds of North America [microform]. Birds; Water-birds; Oiseaux; Oiseaux aquatiques. ANATINiE â THE DUCKS â ^THYIA. 37 between that of ^E. americana and yE. vallisneria ; its color is also different, being black, crossed by a band of pule blue, instead of pale blue with the end black ; the entire abdomen is undulated with "ray, like the sides and flanks, only mure delicately, while the back, scapulars, and sides are much whiter than in yJi. umericana. The rich chestnut-red of the neck is destitute of the metallic reddish-purple j,dos«> while it involves the en- tire neck,
. The water birds of North America [microform]. Birds; Water-birds; Oiseaux; Oiseaux aquatiques. ANATINiE â THE DUCKS â ^THYIA. 37 between that of ^E. americana and yE. vallisneria ; its color is also different, being black, crossed by a band of pule blue, instead of pale blue with the end black ; the entire abdomen is undulated with "ray, like the sides and flanks, only mure delicately, while the back, scapulars, and sides are much whiter than in yJi. umericana. The rich chestnut-red of the neck is destitute of the metallic reddish-purple j,dos«> while it involves the en- tire neck, even tinging the anterior part of the back, instead of being confined to about the ui>per half of the neck ; the wing-coverts are also much lighter colored, and, in most speci- mens, very distinctly vermiculated with white, instead of nearly plain slaty gray. In general size the European species is decidedly infe- rior , the tarsus is considerably shorter, while the middle toe is decidedly longer. The female of the ited-head resembles that of the Ring-neck, or Ring-billed Black-head (^Fidix collaris), so closely as to be distin- guished with difliculty, except on direct com- parison. The latter has all the colors darker, however, the fore part of the head and the throat more decidedly white, and the bill much shorter and broader. The different propor- tions, however, afford the surest means of dis- tinguishing them, the two species comparing about as folhnvs : â iE. americana. Wing, inches ; culmen, ; greatest width of bill, .85, least width, .75 ; tarsus, ; middle toe, F. collaris. Wing, inches ; culmen, ; greatest width of bill, .85, least width, .65 ; tarsus, ; middle toe, 2.(K). The Red-head Duck lias a distribution more or less general throughout North i America, breeding in high northern latitudes down to about 44°, and frequenting in ; the winter the southern portions of the continent as far as Mexico. It is found bot
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1884
