多谢辉哥指出青脚鹬和小青脚鹬的分别。
Thanks to Ho Fai for pointing out the difference between greenshank and Nordmann 's greenshank .
盐城自然保护区小青脚鹬春季迁徙种群的野外观察
A field study of spring migratory population of nordmann 's Greenshank ( tringa guttifer ) in Yancheng Nature Reserve