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Location France, Nord-Pas-de-Calais
Central coordinates 1o 38.00' East  50o 28.00' North
IBA criteria C6
Area 1,500 ha
Altitude 0 - 2m
Year of IBA assessment 2000

Ligue Pour La Protection des Oiseaux

Site description An area of marshes with ponds, reedbeds (Phragmites), wet meadows and deciduous woodlands.

Key Biodiversity The area is important for birds breeding in reedbeds and passage waterbirds.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bluethroat Luscinia svecica breeding  1991  10-20 breeding pairs  C6  Least Concern 


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland  -
Grassland Humid grasslands  5%
Wetlands (inland) Rivers and streams; Standing freshwater; Water fringe vegetation  93%

Land use

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

Protection status National None International Partial1,200 ha of IBA covered by Special Protection Area (Marais de Balançon, 1,200 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Marais de Balançon et de Villiers. Downloaded from on 24/10/2016

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