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

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Transequatorial migrant. Most birds move N to winter in subarctic waters of Pacific; subsequently move S down W coast of N America, with large numbers off S California in Aug. Some, probably mostly immatures, spend breeding season in winter quarters, ranging S to Chile. Single record from N Atlantic, 1bird off New Jersey, USA.   (del Hoyo J, Elliott A, Sargatal J (eds), 1992)

• digitised by GROMS, after del Hoyo J A Elliott; J Sargatal (eds) (1992) - 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).