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Location France, Aquitaine
Central coordinates 0o 38.00' West  45o 14.00' North
IBA criteria C6
Area 7,050 ha
Altitude 0 - 2m
Year of IBA assessment 2000

Ligue Pour La Protection des Oiseaux

Site description Estuary with streams, reedbeds (Phragmites), marshes and wet meadows, Quercus and Salix woodlands, mudflats, saltmarshes and peatbogs.

Key Biodiversity This site is important for species associated with reedbeds.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Purple Heron Ardea purpurea breeding  1991  47 breeding pairs  C6  Least Concern 
Western Marsh-harrier Circus aeruginosus breeding  1997  6 breeding pairs  C6  Least Concern 
Circus cyaneus breeding  1991  4 breeding pairs  C6  Not Recognised 
Montagu's Harrier Circus pygargus breeding  1991  23-27 breeding pairs  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
FR206 Hunting Reserve 125 protected area contained by site 125  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland  -
Grassland Humid grasslands  -
Wetlands (inland) Standing brackish and salt water; Water fringe vegetation  -
Artificial - terrestrial Arable land  -
Coastline Mud flats & sand flats; Salt marshes  -

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
hunting -
urban/industrial/transport -
other -

Protection status National Low International None125 ha of IBA covered by Hunting Reserve (125 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Estuaire de la Gironde : marais du Blayais. Downloaded from on 22/10/2016

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