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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


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.

Key Biodiversity This is an important area for cliff-nesting raptors.

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 
Circaetus gallicus breeding  1995  5-6 breeding pairs  good  C6  Not Recognised 
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)  
Valderejo Nature Park 3,500 protected area contained by site 3,496  


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 (2016) Important Bird and Biodiversity Area factsheet: Valdegovía-Arcena mountain range. Downloaded from on 26/10/2016

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