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Location Spain, Castilla y León
Central coordinates 3o 25.00' West  42o 0.00' North
IBA criteria A4ii, B1iii, B2, C2, C6
Area 26,000 ha
Altitude 860 - 1,455m
Year of IBA assessment 2000


Site description A group of limestone cliffs carved by the Rivers Arlanza and Mataviejas. The slopes and plateaus are covered by Juniperus and Quercus woodland, scrub and arable agriculture in the valleys.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Egyptian Vulture Neophron percnopterus breeding  1992  17 breeding pairs  good  B2  Endangered 
Griffon Vulture Gyps fulvus resident  1992  219 breeding pairs  good  A4ii, B1iii, B2, C2, C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
RIBERAS DEL RÍO ARLANZA Y AFLUENTES - ES4120071 Habitats Directive 998 protected area overlaps with site 68  
SABINARES DEL ARLANZA - ES4120031 Birds Directive 37,404 protected area overlaps with site 15,923  
SABINARES DEL ARLANZA - ES4120091 Habitats Directive 37,639 protected area overlaps with site 15,713  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved deciduous woodland; Broadleaved evergreen woodland  30%
Shrubland Sclerophyllous scrub, garrigue and maquis; Scrub  20%
Caves and subterranean habitats (non-aquatic) Caves  -
Artificial - terrestrial Arable land; Forestry plantations; Other urban and industrial areas; Ruderal land  35%
Rocky areas Inland cliffs; Scree & boulders  -

Land use

Land-use Extent (% of site)
agriculture 35%
forestry 25%
hunting 65%

Protection status National None International None

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Arlanza Valley-Peñas de Cervera. Downloaded from on 22/09/2014

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