gadwall

/gad-wawl/US // ˈgædˌwɔl //UK // (ˈɡædˌwɔːl) //

挡土墙

Definitions

n.名词 noun

1
plural gad·walls, gad·wall.
- : a grayish-brown wild duck, Anas strepera, found in temperate parts of the Northern Hemisphere.

In the autumn the lakes in this neighbourhood are the resort of large packs of wigeon, gadwall and pochard.
The gadwall is really a southern duck, coming into the United States to breed.
I saw only one Gadwall Duck; these birds are found in abundance on the plains where water and rushes are to be found.
A month later, however (in May), we obtained nests both of this Pochard and of the Gadwall, both built among rushes on dry ground.
The gadwall, which has been described as a "thoroughbred" looking duck, is the rarest yet mentioned.