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

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Chiefly sedentary within range, but also somewhat dispersive and nomadic, as some favoured areas may become unsuitable in drought conditions. New Zealand race has occurred Auckland Is.   (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).