Species fact sheet by Global Register of Migratory Species - www.groms.de

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Long distance Migrant; moves down coasts of Kuril IS, Sakhalin, Ussuriland, Korea, Japan, Parts of Philippines, E Sumatra and Borneo; less common in transit in E China, Hong Kong and New Guinea. Fewer birds appear in continental Asia in autumn than in spring, vice versa in Japan. NW & E Australia reached as early as Jun, but mainly in late Aug, followed by gradual southward movement; most birds reach S Australia in Nov. Northbound migration up coast of E Australia occurs mainly Feb-Apr, but birds from SE Australia seem to bypass E coast site. More females seem to migrate farther S. Non-breeding birds spend boreal summer in N & NW Australia and Victoria, and possibly do so until late in their 3rd year.   (del Hoyo J, Elliott A, Sargatal J (eds), 1996)

• digitised by GROMS, after del Hoyo J A Elliott; J Sargatal (eds) (1996) - www.hbw.com,
• Copyright: GROMS/BfN - www.groms.de
  
  (A digitised version of this map is published in GIS shape format on the GROMS CD).