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Location Portugal, Alentejo
Central coordinates 7o 0.00' West  38o 59.00' North
IBA criteria A1, A4i, B1i, B2, B3, C1, C2, C6
Area 9,575 ha
Altitude 190 - 341m
Year of IBA assessment 2002

Sociedade Portuguesa para o Estudo das Aves

Site description Open plains used for cultivation of cereals (mostly wheat) in rotation with melon, sunflower and tomato. Pastoral woodland and fallow areas are grazed by sheep and cattle. Low level of human activity.

Key Biodiversity An important area for steppic species, specially for the conservation of Otis tarda in Portugal, as well as one of the most important wintering sites for Grus grus.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Montagu's Harrier Circus pygargus breeding  2002  15-20 breeding pairs  good  B3, C6  Least Concern 
Great Bustard Otis tarda resident  2002  50-60 individuals  good  A1, C1, C6  Vulnerable 
Little Bustard Tetrax tetrax resident  2002  120-150 individuals  good  A1, B2, C1, C6  Near Threatened 
Common Crane Grus grus winter  2002  800-1,000 unknown  good  A4i, B1i, B2, C2, C6  Least Concern 
Burhinus oedicnemus breeding  1996  20-30 breeding pairs  medium  B2, C6  Not Recognised 

IBA Monitoring

2005 low not assessed not assessed
Good - based on reliable and complete / representative data

Transportation and service corridors utility & service lines happening now small area/few individuals (<10%) very rapid to severe deterioration low


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved evergreen woodland  30%
Artificial - terrestrial Arable land  70%
Wetlands (inland) Rivers and streams  -

Land use

Land-use Extent (% of site)
forestry 30%
agriculture 70%

Protection status National: Spetial protection area Campo Maior, 9575 ha overlaps with IBAInternational : SPA Campo Maior and Candidature SIC Caia

References Pinto & Hellmich (1996)

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Campo Maior. Downloaded from on 24/10/2016

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