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Location Spain, Castilla y León
Central coordinates 6o 45.00' West  40o 50.00' North
IBA criteria A4ii, B1i, B1iii, B2, C2, C6
Area 170,000 ha
Altitude 400 - 837m
Year of IBA assessment 2000


Site description A area of granitic cliffs around the River Duero and its tributaries. The site is dominated by Quercus, Cistus and Juniperus scrub. The main human activities are arable agriculture and livestock-farming.

Key Biodiversity This is an important site for cliff-nesting raptors and breeding Ciconia nigra.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black Stork Ciconia nigra breeding  1996  8-10 breeding pairs  good  B1i, C2, C6  Least Concern 
Falco peregrinus resident  1996  10-12 breeding pairs  good  C6  Not Recognised 
Egyptian Vulture Neophron percnopterus breeding  1996  110 breeding pairs  medium  A4ii, B1iii, B2, C2, C6  Endangered 
Griffon Vulture Gyps fulvus resident  1996  250-300 breeding pairs  medium  A4ii, B1iii, B2, C2, C6  Least Concern 
Bonelli's Eagle Aquila fasciata resident  1996  10-12 breeding pairs  good  B2, C2, C6  Least Concern 
Golden Eagle Aquila chrysaetos resident  1996  14 breeding pairs  good  B2, C6  Least Concern 
Red-billed Chough Pyrrhocorax pyrrhocorax resident  1996  100-160 breeding pairs  poor  B2, C2  Least Concern 


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved evergreen woodland  30%
Shrubland Scrub  10%
Grassland Dry siliceous grassland  10%
Rocky areas Inland cliffs  10%
Artificial - terrestrial Arable land  25%

Land use

Land-use Extent (% of site)
agriculture 45%
hunting -

Protection status National None International Partial75,000 ha of IBA covered by Special Protection Area (Arribes del Duero, 86,000 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Río Huebra-Arribes del Duero. Downloaded from on 28/10/2016

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