基本解釋[生物學(xué)]灰雁詞組短語短語Greylag Goose Anser anser 灰雁Anser anser Greylag Goose 灰雁greylag goose更多詞組英英字典柯林斯英英字典 a large grey Eurasian goose, Anser anser: the ancestor of many domestic breeds of goose (US spelling graylag)greylag goose劍橋字典greylag goose柯林斯字典專業(yè)釋義生物學(xué)灰雁The Bean Goose and the Spot-billed Duck dominates this community, the Little Grebe, the Grey Heron, the Black-crowned Night-Heron, the Swan Goose, the Greylag Goose, the Mallard and the Common Crane is also common, and the other species are rare.4.3.優(yōu)勢度分析發(fā)現(xiàn),豆雁和斑嘴鴨的其數(shù)量等級分別爲(wèi)43.69%和11.98%,高於10%,爲(wèi)優(yōu)勢種;小鸊鷉、蒼鷺、夜鷺、鴻雁、灰雁、綠頭鴨、灰鶴其數(shù)量等級在1%～10%之間,爲(wèi)普通種;其餘水鳥爲(wèi)稀有種。