Bristle-thighed Curlew (Numenius tahitiensis) lives in coastal tundra across Pacific islands. It feeds on crabs and insects. Its conservation status is Near Threatened.
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Fascinating facts about the Bristle-thighed Curlew
The bristle-thighed curlew can sustain astonishingly long nonstop flights, easily exceeding six thousand kilometres. Its first migratory leg alone is a nonstop four-thousand-kilometre hop from Alaska to Laysan, showing the bird's capacity for extreme endurance. This ability links its Alaskan breeding grounds directly with the far-flung tropical Pacific islands where it winters, allowing it to cross entire oceanic expanses without stopping.
Bristle-thighed curlews have a highly varied diet, taking flowers, berries, insects, sea life and the eggs of other birds. When tackling eggs they employ rocks to crack the shells, a behaviour that is the only documented tool use among shorebirds. This opportunistic feeding strategy lets them exploit both plant and animal resources across their tropical winter habitats, enhancing their survival during long migrations.
Although the species was named in the eighteenth century, its breeding locations remained unknown until 1948, when researchers finally pinpointed them. The birds nest in shallow depressions lined with tundra moss on low-lying tundra near the shoreline of the lower Yukon River and the Seward Peninsula. These remote, low-lying sites provide the quiet ground needed for incubation and protect the clutch of four greenish, speckled eggs.
In Mangareva the bristle-thighed curlew is known as kivi or kivikivi, a name that many believe was borrowed for New Zealand's flightless bird, the kiwi. Some linguists, however, argue the similarity is coincidental and point to the Proto-Oceanic term *kiwiwi, which actually refers to the Pacific golden plover. This debate highlights how local names can travel far beyond their original islands, influencing the vocabulary of distant cultures.
Adult bristle-thighed curlews leave their chicks when the young are about five weeks old, allowing the fledglings to begin the southward migration. The juveniles continue to feed independently until they are strong enough to join the long journey, which starts with a nonstop 4,000 km flight from Alaska to Laysan. This early independence ensures the chicks can build the stamina needed for the extensive ocean crossing that defines the species' annual migration.
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As the Bristle-thighed Curlew swoops across the vast, sun-baked expanses of its Pacific island habitats, its slender form casts a fleeting shadow on the sandy shores, its long, curved bill probing the terrain with an air of quiet purpose. With each deliberate stride, this enigmatic bird seems to embody the very essence of migratory wonder, its remarkable journeys spanning thousands of miles each year a testament to its unyielding resilience. In the soft, golden light of dawn, the Curlew's mottled plumage blends seamlessly into the surroundings, allowing it to move unseen, a phantom of the shoreline.
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