. Relazione annuale dei commissari di pesca, gioco e foreste dello Stato di New York. Le foreste e la silvicoltura; Pesca; gioco e gioco-uccelli. 268 relazione dei commissari di ite alimentazione-massa ; e questo, in non piccola misura, probabilmente rappresenta la grande diminuzione di numeri che ha preso posto lungo le rive della Chesapeake e altrove. Il nido delle canvasback è costruito tra l'erba alta o precipita lungo il margine di alcuni stagno o lago o flusso. Esso è collocato in acque poco profonde e spesso si appoggia sul fondo, che si erge da una base ingombrante che può essere semplicemente un rude pila di gras

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. Annual report of the Commissioners of Fisheries, Game and Forests of the State of New York. Forests and forestry; Fisheries; Game and game-birds. 268 REPORT OF THE COMMISSIONERS OF ite feeding-ground ; and this, to no small extent, probably accounts for the great diminution in numbers that has taken place along the shores of the Chesapeake and elsewhere. The nest of the canvasback is built among the tall grass or rushes along the margin of some pond or lake or stream. It is placed in shallow water, and often rests on the bottom, rising from a bulky base that may be merely a rude pile of grass, though the superstructure of grass and small twigs, with a lining of feathers and down, apparently sometimes from the female herself, is compact and well put together — a good receptacle for the six to ten grayish-green or greenish-buff eggs deposited during its construction. The male canvasback, when in good condition, weighs at least three pounds, and is nearly two feet in length, with an extent of wing that approximates a yard. The bill is rather long and narrow, thin toward its tip, but sloping gradually back to a high base. The close-feathered head and the neck are reddish-chestnut, the top of the head being somewhat blackish ; the breast, the fore part of the back, part of the rump, the upper and lower tail-coverts are black ; the sides, flanks and most of the back are white, finely vermic- ulated with dusky, presenting an appear- ance that has suggested the name " can- vas "-back ; the abdomen is pure white. The bill is greenish-black, the eye reddish-brown, the feet lead color. The female resembles the male, but in coloration is duller throughout. Although in superficial appear- ance this species bears a strong resemblance to the redhead, and in fact is often not discriminated, a careful examination should serve to separate them without trouble. The canvasback has a much longer and narrower bill; much more deli- cate black wavy cross-markings on the back

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1890
• booksubjectforests
• bookyear1895