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Location Spain, Aragón
Central coordinates 0o 40.00' West  42o 25.00' North
IBA criteria A4ii, B1iii, B2, B3, C2, C6
Area 45,000 ha
Altitude 800 - 1,595m
Year of IBA assessment 2000


Site description A mountainous area on the southern edge of the Pyrenees. The vegetation includes maquis, Pinus plantations, and extensive scrub and grassland areas. The main human activities are forestry, livestock-farming and recreation.

Key Biodiversity This is an important area for raptors.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Red Kite Milvus milvus resident  1995  20-30 breeding pairs  medium  B3, C6  Near Threatened 
Bearded Vulture Gypaetus barbatus resident  1996  3 breeding pairs  good  B2, C6  Near Threatened 
Griffon Vulture Gyps fulvus resident  1995  250 breeding pairs  medium  A4ii, B1iii, B2, C2, C6  Least Concern 
Red-billed Chough Pyrrhocorax pyrrhocorax resident  1996  100 breeding pairs  medium  B2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
MONTE PEIRO - ARGUIS - ES2410015 Habitats Directive 1,549 protected area contained by site 1,549  
RÍO ARBA DE BIEL - ES2430066 Habitats Directive 584 protected area is adjacent to site 0  
RÍO ARBA DE LUESIA - ES2430065 Habitats Directive 329 protected area overlaps with site 68  
RÍO ONSELLA - ES2430063 Habitats Directive 443 protected area overlaps with site 107  
SIERRA Y CAÑONES DE GUARA - ES0000015 Birds Directive 81,350 protected area is adjacent to site 0  
SIERRAS DE SANTO DOMINGO Y CABALLERA - ES2410064 Habitats Directive 30,875 protected area overlaps with site 23,138  
SIERRAS DE SANTO DOMINGO Y CABALLERA Y RÍO ONSELLA - ES0000287 Birds Directive 35,680 protected area overlaps with site 27,089  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland; Broadleaved evergreen woodland; Native coniferous woodland  26%
Shrubland Sclerophyllous scrub, garrigue and maquis  26%
Grassland Steppes and dry calcareous grassland  -
Rocky areas Inland cliffs; Scree & boulders  26%
Artificial - terrestrial Arable land; Forestry plantations; Perennial crops, orchards and groves  -

Land use

Land-use Extent (% of site)
agriculture 26%
forestry -
hunting -
tourism/recreation -

Protection status National None International None

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Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Santo Domingo-Riglos-Gratal. Downloaded from on 25/04/2015

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