释义 |
whistling swannounA bird of the North American race of the tundra swan, breeding in northern Canada and overwintering on the coasts of the US.- Cygnus columbianus columbianus, family Anatidae.
Waterfowl that can be found here include Canada goose, yellow-billed loon, arctic loon, red-throated loon, tundra swan, whistling swan, snow goose, oldsquaw duck and sea ducks....- The law protects the whistling swans in their winter homes.
- Along the stream headed towards Nagano, there is an area where whistling swans have recently been making their stopovers.
|