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Location Spain, Aragón
Central coordinates 0o 30.00' East  42o 40.00' North
IBA criteria A3, B2, C6
Area 44,700 ha
Altitude 1,100 - 3,404m
Year of IBA assessment 2000


Site description A high-altitude region of the Pyrenees with large areas over 3,000 m and numerous small mountain lakes and rocky areas. Lower down, there are Pinus, Abies and Fagus forests. The main human activities are forestry, livestock-farming and recreation.

Key Biodiversity Breeding birds include four of the 10 species in Europe that are restricted to the Eurasian high-montane biome (when breeding).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Western Capercaillie Tetrao urogallus resident  1996  50 breeding pairs  medium  C6  Least Concern 
Rock Ptarmigan Lagopus muta resident  1996  40 breeding pairs  medium  C6  Least Concern 
Grey Partridge Perdix perdix resident  1996  70 breeding pairs  medium  C6  Least Concern 
Bearded Vulture Gypaetus barbatus resident  1996  2 breeding pairs  good  B2  Near Threatened 
Boreal Owl Aegolius funereus resident  1996  7-10 breeding pairs  poor  C6  Least Concern 
Black Woodpecker Dryocopus martius resident  1996  25 breeding pairs  medium  C6  Least Concern 
Red-billed Chough Pyrrhocorax pyrrhocorax resident  1995  100 breeding pairs  medium  B2  Least Concern 
Yellow-billed Chough Pyrrhocorax graculus resident  1995  abundant  A3  Least Concern 
Wallcreeper Tichodroma muraria resident  1996  common  A3  Least Concern 
Alpine Accentor Prunella collaris resident  1996  common  A3  Least Concern 
Alpine Citril Finch Carduelis citrinella resident  1996  abundant  A3  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Benasque National Game Reserve 23,913 protected area contained by site 23,913  
Posests - Maldeta Nature Park 29,488 protected area overlaps with site 25,200  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland; Native coniferous woodland  20%
Grassland Alpine, subalpine and boreal grassland  35%
Rocky areas Inland cliffs; Scree & boulders  30%
Artificial - terrestrial Highly improved re-seeded landscapes  15%

Land use

Land-use Extent (% of site)
forestry -
hunting 80%
tourism/recreation 15%
agriculture 40%

Protection status National Partial International Partial23,913 ha of IBA covered by National Game Reserve (Benasque, 23,913 ha). 25,200 ha of IBA covered by Natural Park (Posets-Maladeta, 33,267 ha). 25,200 ha of IBA covered by Special Protection Area (Parque Posets-Maladeta, 33,267 ha.

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Recommended citation  BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Posets-Maladeta. Downloaded from on 26/11/2015

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