The bird fauna is mostly the common east Siberian, but there are some endangered Nordmann's greenshank ( " Tringa guttifer " ) and the Sakhalin leaf warbler ( " Phylloscopus borealoides " ).
2.
At least 30 species of migratory waterbirds are known to use Pulau Tengah including rare and endangered species such as the Chinese Egret ( Egretta eulophotes ), Spotted Greenshank ( Tringa guttifer ) and Asian Dowitcher ( Limnodromus semipalmatus ).
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