Far Eastern Curlew

The Far Eastern Curlew is the largest of all curlew species, breeding in remote boggy meadows of eastern Russia and northeastern China before migrating along the East Asian-Australasian Flyway to nonbreeding grounds on the mudflats of Australia and Southeast Asia. Its uniformly dark, heavily streaked plumage and lack of a contrasting pale rump distinguish it from the similar Eurasian Curlew.

Feathers show dense dark brown streaking over a rufous-buff to grayish-brown ground color, appearing darker and less contrastingly patterned than Eurasian Curlew. Critically, the rump and lower back feathers are the same dark brown streaked color as the rest of the upperparts, lacking the pale whitish wedge seen in Eurasian Curlew, a key distinguishing feature for feather identification. Underwing coverts are heavily barred dark brown rather than plain whitish, giving a darker appearance overall. Flight feathers are dark brown with narrow pale edges. The bill is proportionately the longest of any curlew, often strongly downcurved at the tip.

Sexes look similar, with females larger and longer-billed than males. Juveniles resemble adults but show slightly buffier fringing on wing coverts. Seasonal variation is subtle, mostly reflecting feather wear rather than distinct breeding and nonbreeding plumages. The complete molt occurs primarily on nonbreeding mudflat grounds, with flight feather replacement extending over several months and sometimes suspended during northward migration.

Breeds in remote boggy meadows and open taiga wetlands of far eastern Russia and northeastern China. It undertakes one of the longest shorebird migrations, moving along the East Asian-Australasian Flyway with critical stopover sites on the tidal mudflats of the Yellow Sea, before wintering on estuaries, tidal mudflats, and mangrove-fringed coasts across Australia, New Guinea, and Southeast Asia.

Far Eastern Curlews forage on exposed tidal mudflats, probing deeply with their extremely long bill for burrowing crabs and other invertebrates, often working the intertidal zone as the tide recedes and retreating to high-tide roosts in large flocks. Nests are shallow ground scrapes on remote wetland tundra, with both parents involved in incubation. Its call is a loud, far-carrying whistle similar to other curlews but generally deeper. Conservation status is IUCN Far Eastern Curlew: Endangered, reflecting steep population declines driven largely by loss of tidal mudflat stopover habitat along its migration route.