The regurgitated sandpiper is a water bird with very long legs.

The biggest feature is that the mouth is long and curved, hence the name anti-billed sandpiper.
The regurgitated sandpiper often forages in shallow waters and tidal flats.
The anti-billed sandpiper prefers to move in groups.
The anti-billed sandpiper is good at swimming, and its mouth sweeps to the sides when eating.
It is found in Xinjiang, Qinghai, Inner Mongolia, Liaoning, Jilin and other provinces.