英语语法分析

Lesser Scaup Aythya affinis, Northern Pintail Anas acuta, and several sea ducks are showing troubling declines, but most geese are increasing dramatically and many ducks have held steady.

一些鸟类如针尾鸭和海鸭等的数量仍然在下降，但是大多数雁类的数量都有了明显增加，很多鸭子的数量也保持稳定。