Fig. 1From: Far eastern curlew and whimbrel prefer flying low - wind support and good visibility appear only secondary factors in determining migratory flight altitudeMigratory routes of far eastern curlew (purple) and whimbrel (brown). Sites of transmitter deployment are marked by white dots. In-flight fixes are marked by coloured dots where size indicates the flight altitude. Stationary sites, including stopover sites, are marked by black dotsBack to article page