The whimbrel is found along coasts all over the world. It breeds in central and east Siberia and winters in south China, South-east Asia and Australasia.
It is one of Singapore's most common avian visitors, with a peak population of 450 in Sungei Buloh.
Globally, its population is 2.3 million. One of its distinct features is a downward-curving bill - about twice the length of its head.
The bar-tailed godwit has a long and slightly upturned bill that is black at the tip. The species' breeding range stretches from Scandinavia to Russia and Alaska. While it has a global population of 1.2 million, it is an uncommon winter visitor to Singapore, with a peak population in Sungei Buloh of just 10.
A familiar winter visitor, the common redshank is usually found in Sungei Buloh between August and April, with some birds arriving as early as July.
It has a stout bill that is relatively long and long legs. The East Asian-Australasian population breeds in Mongolia and the far eastern parts of Russia and China.
It has a global population of 2.6 million and a peak population of 1,000 in Sungei Buloh.
• Source: 2nd edition of Migratory Birds Of Sungei Buloh Wetland Reserve