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

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Migrates through interior North and Central America to C South America, but during autumn also down Atlantic coast to N South America, where fairly large numbers occur in Surinam Aug-Sept; small numbers winter locally in S USA. Females migrate S from 2nd week of Jul, males 1 week later, and juveniles from mid-Aug; in Manitoba young and adults move at same time. On return, overflies West Indies and Gulf of Mexico from coast of Colombia and Venezuela, reaching USA mainly Apr; migrates N along rivers to Arctic coast; arrives at breeding grounds from late May, males c. 2 days earlier than females. Some remain in winter quarters during breeding season. Migrating flocks can total up to hundreds of birds.   (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).