世界野生鳥類總數(shù)超過500億只

據(jù)最新估計，世界上至少有 500 億只野生鳥類。

Counting the number of wild birds in the world is no easy task. Scientists turned to a database, known as eBird, where birdwatchers record sightings of everything from woodpeckers to herons, to ospreys.

統(tǒng)計世界野生鳥類的總數(shù)并非易事?？茖W家們求助于一個名為 “eBird” 的數(shù)據(jù)庫，觀鳥者在數(shù)據(jù)庫記錄下觀察到的啄木鳥、鷺、鶚等鳥類的信息。

The researchers came up with an estimate of 50 billion individual wild birds currently living on the planet. That's about six birds for every human being.

研究人員們估計，目前生活在地球上的野生鳥類有500億只，相當于地球人口的六倍左右。

The house sparrow tops the charts, followed closely by the European starling, the ring-billed gull¹, and the barn swallow.

其中，家麻雀數(shù)量位居榜首，緊隨其后的是歐椋鳥、環(huán)嘴鷗和家燕。