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Location France, Bretagne
Central coordinates 2o 28.00' West  47o 30.00' North
IBA criteria A4i, A4iii, B1i, B2, C2, C3, C4
Area 4,500 ha
Altitude 0 - 2m
Year of IBA assessment 2000

Ligue Pour La Protection des Oiseaux



Site description A bay and estuary with mudflats, coastal cliffs, sand and shingle-beaches and saltmarshes. Human activities include fishing, hunting, and recreation, including sailing.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta winter  1997  108-691 individuals  B1i, C3  Least Concern 
Brent Goose Branta bernicla winter  1997  1,420-3,610 individuals  A4i, B1i, C3  Least Concern 
Greater Scaup Aythya marila winter  1997  1,950-5,440 individuals  B2  Least Concern 
Pied Avocet Recurvirostra avosetta winter  1997  1,294-2,103 individuals  A4i, B1i, B2, C2  Least Concern 
Eurasian Curlew Numenius arquata winter  1997  215-1,596 individuals  B2  Near Threatened 
A4iii Species group - waterbirds winter  1997  20,000 individuals  unknown  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Baie de Vilaine - FR5310074 Birds Directive 6,851 protected area overlaps with site 3,823  
ESTUAIRE DE LA VILAINE - FR5300034 Habitats Directive 4,769 protected area overlaps with site 3,585  
FR016 Hunting Reserve 500 protected area contained by site 500  
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer - FR5200626 Habitats Directive 2,085 protected area overlaps with site 209  
Marais du Mès, baie et dunes de Pont-Mahé, étang du Pont de Fer, île Dumet - FR5212007 Birds Directive 2,304 protected area overlaps with site 206  
Mor Braz - FR5212013 Birds Directive 40,276 protected area is adjacent to site 0  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Tidal rivers and enclosed tidal waters  -
Sea Sea inlets and coastal features  -
Coastline Mud flats & sand flats; Salt marshes; Sand dunes & beaches; Sea cliffs and rocky shores; Shingle & stony beaches  -

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
hunting -
tourism/recreation -

Protection status National Partial International Partial500 ha of IBA covered by Hunting Reserve (500 ha). 1,270 ha of IBA covered by Special Protection Area (Baies de Kervoyal et de Vilaine, 1,270 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Baie de Vilaine. Downloaded from http://www.birdlife.org on 30/08/2014

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