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

Falco rusticolus Linnaeus, 1758 Family: Falconidae Order: Falconiformes Back
Gyrfalcon Gerfalke Faucon gerfaut Halcón gerifalte
CMS App II Redlist 2000 (Criteria) NL CITES I (Europe: SPEC 3 threat status V)
Migration: partial range extension, nomadising

Falco rusticolus

Many adults sedentary; juveniles generally more dispersive and move farthest S. Patterns complicated by cyclical food availability, which may cause irruptive movements, but some clear movements, e.g. white morph birds from Greenland to Iceland. Some move from North America to Siberia (see page 237). May winter around edge of sea ice or near open water (polynyas). Most birds winter N of 52 N; in North America has reached S to 35 N, in Aerasia c. 46 N.
(del Hoyo J A Elliott; J Sargatal (eds) (1994) - www.hbw.com )

Regions: East Asia, Europe, North America, North Asia, West & Central Asia
Recommended link: http://www.hawk-conservancy.org/priors/gyr.htm
Feedback: mail to Klaus Riede
Explanatory notes
(Last update: 05.08.02 by E.Heuel)

Populations