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Location France, Aquitaine
Central coordinates 0o 18.00' West  43o 36.00' North
IBA criteria B2, C6
Area 16,100 ha
Altitude 2 - 110m
Year of IBA assessment 2000

Ligue Pour La Protection des Oiseaux

Site description Marshes, wet meadows, and lakes along the River Adour, with woodland, hedgerows and arable land.

Key Biodiversity Species of global conservation concern that do not meet IBA criteria: Aythya nyroca (wintering); Haliaeetus albicilla (wintering); Crex crex (passage).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
White Stork Ciconia ciconia breeding  1991  4 breeding pairs  C6  Least Concern 
Black-crowned Night-heron Nycticorax nycticorax breeding  1991  80-120 breeding pairs  C6  Least Concern 
European Honey-buzzard Pernis apivorus breeding  1991  5-50 breeding pairs  C6  Least Concern 
Booted Eagle Hieraaetus pennatus breeding  1991  5-50 breeding pairs  B2, C6  Least Concern 
White-tailed Sea-eagle Haliaeetus albicilla passage  1991  1-10 individuals  C6  Least Concern 
Milvus migrans breeding  1991  100-500 breeding pairs  B2, C6  Not Recognised 
Red-backed Shrike Lanius collurio breeding  1991  10-100 breeding pairs  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Saint-Martin de Seignanx Hunting Reserve 881 protected area contained by site 881  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved deciduous woodland; Mixed woodland  55%
Grassland Humid grasslands  40%
Wetlands (inland) Raised bogs; Rivers and streams; Standing freshwater; Water fringe vegetation  35%
Artificial - terrestrial Arable land; Perennial crops, orchards and groves  53%

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
forestry -
hunting -
tourism/recreation -
urban/industrial/transport -
water management -
other -

Protection status National Partial International Low881 ha of IBA covered by Hunting Reserve (Saint-Martin de Seignanx, 881 ha ). 93 ha of IBA covered by Special Protection Area (Barthes de l'Adour: Saint-Martin de Seignanx, 93 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Barthes de l'Adour. Downloaded from on 27/10/2016

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