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

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Migration towards winter quarters starts in Aug, with main passage through Hong Kong in Sept, Oct, and through Malay Peninsula in Oct-Nov; returns through Thailand in Mar-Apr and through Malay Peninsula in Apr- Jun, reaching breeding grounds of S in Apr-May and extreme N in Jun. Vagrant to Burma and Palau Is (Micronesia); two surprising records from Europe, in Germany and Italy, the latter at any rate not apparently bird escaped from captivity.   (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).