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

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Siberian and North American birds migrate to South America, down Atlantic and Pacific coasts and through highlands of Colombia and Ecuador, and lakes in W Amazonia. Small fraction of Siberian population winters in Australasia and passes through Magadan, Commander Is, Kuril Is, Sakhalin, Ussuriland, Japan and Korea; on SE Asian coast, not recorded farther than China, Taiwan and Hong Kong. Males start S migration late Jun; females to early Aug; juveniles migrate over broader range of N America early Aug and Oct. N migration Mar to early Jun, farther W via interior North America, but avoiding W USA; high numbers stage at Cheyenne Bottoms (Kansas). Regular on passage on Hawaiian, Phoenix and Line Is. Many 1st-year probably migrate N to breeding ground in boreal spring.   (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).