北京鸟类 Birds of Beijing

尽可能全地收录在北京市境内有现代确切记录的鸟种。
Trying to include all bird species with reliable modern-day records within the range of Beijing Municipality.

小鸊鷉（学名Tachybaptus ruficollis）大约25到30厘米长，重量120到300克，是鸊鷉目(Podicipedformes)鸊鷉科(podicipedidae)最小的鸟。