Whimbrel

This is a large wader at 37–47 cm (15–19 in) in length, 75–90 cm (30–35 in) and 270–493 g (9.5–17.4 oz) in weight. It is mainly greyish brown, with a white back and rump, and a long curved bill (longest in the adult female) with a kink rather than a smooth curve. It is generally wary. The usual call is a rippling whistle, prolonged into a trill for the song.
The only similar common species over most of this bird's range are larger curlews. The Whimbrel is smaller, has a shorter, decurved bill and has a central crown stripe and strong supercilia.