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

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Unlike other small Calidris, migration appears as series of shorter flights; flight range c. 600 km. E Siberian birds join Nearctic population on migration. Most migrate down Pacific coast, although significant numbers move through interior North America, with Cheyenne Bottoms as most important interior stopover site, during both spring and autumn. During N migration Copper R Delta functions as key staging site, used by more than 90% of total population; other major spring stopover sites are San Francisco Bay, Grays Harbor, Fraser Delta, Chesterman Beach, Tofino mudflats and Stikine Delta; southbound, Yukon Delta, Kuskokwim Bay and Boundary Bay. On Atlantic coast, common autumn migrant to Puerto Rico. Males winter, on average, closer to breeding grounds, and predominate at start of N migration. In autumn, departure occurs Jul to early Aug; adults precede juveniles, and females slightly precede males. Migrates in huge flocks. Many immatures stay in non- breeding range all year. Arrival on breeding grounds May to mid-Jun.   (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).