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

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Migratory. Much movement of flocks between lakes during summer; numbers vary from day to day, suggesting nightly movements. Birds leave before lakes freeze over in May: originally assumed to winter at sea, on Atlantic coast, or in fjords and channels of S Chile; but seems unlikely that they cover long distances; delayed discovery of species and almost complete absence of records away from upland plateaux suggest probable wintering close to breeding areas, perhaps on nearby large enough to have permanently ice-free areas, e.g. L Islote, L Quiroga and L Strobel. Apparently may occasionally establish breeding colonies in areas marginal to main range. Casually near Paine, in Magellanes (S Chile).   (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).