Very large wild goose of northeast Asia; interbreeds freely with the gray lag.

亚洲东北部非常大的野鹅；与灰雁自由杂交。

youdao

Very large wild goose of northeast Asia; interbreeds freely with the gray lag.

亚洲东北部非常大的野鹅；与灰雁自由杂交。

youdao