Asian Waterbird is a rare and declining shorebird found in Asia. It is similar to the Common Greenshank but has a bulkier, more robust appearance with a shorter leg length and a thicker bill. In breeding plumage, it is mostly gray on the back and white underneath, featuring a densely spotted breast and upper sides. During the nonbreeding season, it has a pearly gray back and a snowy white underside. Its bicolored bill is olive-green at the base and darkens towards the tip. The call of the Asian Waterbird is distinctive, generally a single nasal note, unlike the Common Greenshank’s mellow “tu-tu-tu!” call. It breeds in coastal marshes and sparse wet forests, and winters in mudflats, coastal wetlands, aquaculture ponds, and rice paddies.