email a friend
printable version
Location Spain, Aragón
Central coordinates 0o 30.00' West  41o 40.00' North
IBA criteria C6
Area 64,500 ha
Altitude 400 - 822m
Year of IBA assessment 2000

SEO/BirdLife



Site description An eroded range of hills dominated by sclerophyllous scrub and dry grassland, with Juniperus and Pinus forest. The main human activity is livestock-farming.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black Kite Milvus migrans breeding  1996  20 breeding pairs  poor  C6  Least Concern 
Short-toed Snake-eagle Circaetus gallicus breeding  1996  10-15 breeding pairs  poor  C6  Least Concern 
Golden Eagle Aquila chrysaetos resident  1996  8-10 breeding pairs  poor  C6  Least Concern 
Booted Eagle Hieraaetus pennatus breeding  1996  10-15 breeding pairs  poor  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
SIERRA DE ALCUBIERRE - ES0000295 Birds Directive 42,025 protected area contained by site 42,025  
SIERRAS DE ALCUBIERRE Y SIGENA - ES2410076 Habitats Directive 47,050 protected area overlaps with site 38,971  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Native coniferous woodland  26%
Shrubland Sclerophyllous scrub, garrigue and maquis  26%
Grassland   26%
Rocky areas Inland cliffs  -
Artificial - terrestrial Arable land; Ruderal land  -

Land use

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

Protection status National None International None

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Alcubierre and Sigena mountain ranges. Downloaded from http://www.birdlife.org on 29/08/2014

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