Species fact sheet
by Global Register of Migratory Species -
www.groms.de
Use the GROMS
database
for dynamic search for migratory species, new links and references.
Melanerpes lewis |
(GR Gray, 1849) |
|
Family: woodpeckers |
Order: Piciformes |
| | | | | | | |
print version |
|
Lewis's woodpecker |
Pic de Lewis |
Carpintero de Lewis |
Blutgesichtsspecht |
Mostly migratory. Because of marked seasonal changes in diet, has to move variable distances to non-breeding
grounds that provide acorns or nuts; populations of Idaho, Wyoming and Montana migrate longer distances,
c.50% of population in SE Colorado may be resident throughout year. Migrants generally winter within S part of
breeding range (from SW Oregon, C Utah and C Colorado), also locally S to NW Baja California, W & C
Arizona and S New Mexico, more rarely to N Mexico (S to Sonora and Chihuahua); non-breeding distribution
heavily dependent on weather conditions and distribution of acorn crops. Migration sometimes spectacular, with
more than 2000 birds in small groups and loose flocks passing a single point in 1 hour; before arrival at
wintering grounds, nomadic flocks may exploit habitats in mountains or visit orchards. Arrives on winter
grounds late Sept and first half Oct, staying until late Apr; sometimes in large flocks in winter. Spring return less
nomadic than autumn migration, and therefore takes less time. (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).
Feedback: mail to Klaus Riede |
(Last update: 26.04.04 by E.Heuel) |