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sheldrake    
n. 麻鸭

麻鸭

sheldrake
n 1: large crested fish-eating diving duck having a slender
hooked bill with serrated edges [synonym: {merganser}, {fish
duck}, {sawbill}, {sheldrake}]
2: Old World gooselike duck slightly larger than a mallard with
variegated mostly black-and-white plumage and a red bill

Goosander \Goos"an`der\, n. [OE. gossander, a tautological word
formed fr. goose gander. Cf. {Merganser}.] (Zool.)
A species of merganser ({M. merganser}) of Northern Europe
and America; -- called also {merganser}, {dundiver},
{sawbill}, {sawneb}, {shelduck}, and {sheldrake}. See
{Merganser}.
[1913 Webster]


Sheldrake \Shel"drake`\, n. [Sheld drake.]
1. (Zool.) Any one of several species of large Old World
ducks of the genus {Tadorna} and allied genera, especially
the European and Asiatic species. ({Tadorna cornuta} syn.
{Tadorna tadorna}), which somewhat resembles a goose in
form and habit, but breeds in burrows.
[1913 Webster]

Note: It has the head and neck greenish black, the breast,
sides, and forward part of the back brown, the
shoulders and middle of belly black, the speculum
green, and the bill and frontal bright red. Called also
{shelduck}, {shellduck}, {sheldfowl}, {skeelduck},
{bergander}, {burrow duck}, and {links goose}.
[1913 Webster]

Note: The Australian sheldrake ({Tadorna radja}) has the
head, neck, breast, flanks, and wing coverts white, the
upper part of the back and a band on the breast deep
chestnut, and the back and tail black. The chestnut
sheldrake of Australia ({Casarca tadornoides}) is
varied with black and chestnut, and has a dark green
head and neck. The ruddy sheldrake, or Braminy duck
({Casarca rutila}), and the white-winged sheldrake
({Casarca leucoptera}), are related Asiatic species.
[1913 Webster]

2. Any one of the American mergansers.
[1913 Webster]

Note: The name is also loosely applied to other ducks, as the
canvasback, and the shoveler.
[1913 Webster]


Merganser \Mer*gan"ser\, n. [Sp. merg['a]nsar, fr. mergo a diver
(L. mergus, fr. mergere to dip, dive) ['a]nsar goose, L.
anser.] (Zool.)
Any bird of the genus {Mergus} ({Merganser}), and allied
genera of the subfamily Merginae. They are allied to the
ducks, but have a sharply serrated bill, eat fish, and dive
for food. Also called {fish duck}.
[1913 Webster PJC]

Note: The red-breasted merganser ({Merganser serrator})
inhabits both hemispheres. It is called also {sawbill},
{harle}, and {sheldrake}. The American merganser
({Merganser Americanus}.) and the hooded merganser
({Lophodytes cucullatus}) are well-known species.

{White merganser}, the smew or white nun.
[1913 Webster]


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