Species fact sheet
by Global Register of Migratory Species -
www.groms.de
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| Falco rusticolus |
Linnaeus, 1758 |
|
Family: Falconidae |
Order: Falconiformes |
| | | | | | | |
print version |
|
Gyrfalcon |
Faucon gerfaut |
Halcón gerifalte |
Gerfalke |
| Migration: partial |
|
range extension, nomadising |
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, Elliott A, Sargatal J (eds), 1994)
- digitised by GROMS, after del Hoyo J A Elliott; J Sargatal (eds) (1994) - www.hbw.com,
- Copyright: GROMS/BfN -
www.groms.de
| Regions: East Asia, Europe, North America, North Asia, West & Central Asia |
| Feedback: mail to Klaus Riede |
| (Last update: 05.03.04 by E.Heuel) |