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Location Spain, Castilla y León,País Vasco
Central coordinates 3o 11.00' West  42o 50.00' North
IBA criteria B1iii, B2, C2, C6
Area 20,000 ha
Altitude 480 - 1,333m
Year of IBA assessment 2000

SEO/BirdLife



Site description A mountainous area with abundant cliffs. There are extensive areas of Pinus forest in the valleys together with grassland and arable crops. The main human activities are forestry and hunting.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Falco peregrinus resident  1996  4 breeding pairs  good  C6  Not Recognised 
Griffon Vulture Gyps fulvus resident  1996  95-100 breeding pairs  good  B1iii, B2, C2, C6  Least Concern 
Egyptian Vulture Neophron percnopterus breeding  1996  7 breeding pairs  good  C6  Endangered 
Short-toed Snake-eagle Circaetus gallicus breeding  1995  5-6 breeding pairs  good  C6  Least Concern 
Red-billed Chough Pyrrhocorax pyrrhocorax resident  1995  80-100 breeding pairs  good  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
MONTES OBARENES - ES4120030 Birds Directive 43,061 protected area overlaps with site 3,915  
Omecillo-Tumecillo Ibaia / R Habitats Directive 128 protected area overlaps with site 61  
Sobrón - ES2110002 Habitats Directive 1,760 protected area overlaps with site 216  
Valderejo Nature Park 3,500 protected area contained by site 3,496  
Valderejo - ES2110001 Habitats Directive 3,418 protected area contained by site 3,418  
Valderejo-Arcena Mendilerroa / Valderejo-Sierra de Árcena - ES0000245 Birds Directive 6,672 protected area overlaps with site 5,086  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved deciduous woodland; Broadleaved evergreen woodland; Mixed woodland; Native coniferous woodland  47%
Shrubland Heathland; Sclerophyllous scrub, garrigue and maquis; Scrub  48%
Grassland Humid grasslands; Steppes and dry calcareous grassland  49%
Wetlands (inland) Raised bogs; Rivers and streams; Standing freshwater  2%
Caves and subterranean habitats (non-aquatic) Caves  -
Artificial - terrestrial Arable land; Highly improved re-seeded landscapes  16%
Rocky areas Inland cliffs  -

Land use

Land-use Extent (% of site)
agriculture 65%
forestry 50%
hunting 100%
nature conservation and research 22%
tourism/recreation 10%

Protection status National Partial International None3,496 ha of IBA covered by Natural Park (Valderejo, 3,496 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Valdegovía-Arcena mountain range. Downloaded from http://www.birdlife.org on 28/07/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife