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

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Resident in C & S of range. Canadian populations migratory, as indeed are many of those breeding N of California; Oklahoma and Georgia; autumn migration begins towards end Aug and lasts to late Oct or Nov, with peak in Sept; migrates by day, in sometimes large flocks, low over ground. Winter concentrations in USA from SW states through Texas to Florida; auratus group winters S to N Mexico (Sonora E to Tamaulipas), where present Oct-Mar. N populations arrive back on breeding grounds from early Mar to May.   (del Hoyo J, Elliott A, Sargatal J (eds), 2002)

• digitised by GROMS, after del Hoyo J A Elliott; J Sargatal (eds) (2002) - 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).