Japanese Murrelet illustration
Birdsong field guide

Japanese Murrelet

Synthliboramphus wumizusume

A small, globally vulnerable auk characterized by its distinctive black crest and blue-gray upperparts, endemic to the coastal waters of East Asia.

What it sounds like

High-pitched, cricket-like whistling or 'ti-ti-ti' chirps used for parent-chick recognition at sea.

Reference call, compare with what you heard
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Rec. Seo Hae-min · South KoreaCC BY-NC-SAXeno-canto

Field notes

  • It is the only species in the genus Synthliboramphus that grows a prominent crest during the breeding season.
  • Chicks are extremely precocial, leaving the nest to jump into the sea only one to two days after hatching.
  • The species is predominantly nocturnal at its breeding colonies to avoid predation by gulls and large crows.
  • Global populations are small and fragmented, estimated between 2,500 and 10,000 individuals.
  • Unlike most alcids, they often nest in crevices or under dense vegetation like Miscanthus grass rather than deep burrows.
Habitat
Nests on uninhabited rocky offshore islands; forages in temperate pelagic and coastal waters.
Range
Endemic to the Japanese archipelago and the southern coast of the Korean Peninsula.

Similar & commonly confused birds

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