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close| Location | France, Basse-Normandie |
| Central coordinates | 1o 48.00' West 48o 54.00' North |
| IBA criteria | A4i, B1i, B3, C2, C6 |
| Area | 18,400 ha |
| Altitude | 5 - 15m |
| Year of IBA assessment | 2000 |
Ornithological information The site is important for breeding seabirds.
Site description Islands in the Baie du Mont-St-Michel with rocky coasts, sand and shingle-beaches, scrub, grassland and arable land.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| European Storm-petrel Hydrobates pelagicus | breeding | 1991 | 1-10 breeding pairs | - | C6 | Least Concern |
| European Shag Phalacrocorax aristotelis | breeding | 1991 | 525 breeding pairs | - | B3 | Least Concern |
| Great Black-backed Gull Larus marinus | breeding | 1991 | 350 breeding pairs | - | B3 | Least Concern |
| Sandwich Tern Sterna sandvicensis | passage | 1991 | 750-5,000 individuals | - | A4i, B1i, C2 | Least Concern |
| Common Tern Sterna hirundo | breeding | 1991 | 20-25 breeding pairs | - | C6 | Least Concern |
| Dartford Warbler Sylvia undata | breeding | 1991 | 1-10 breeding pairs | - | C6 | Near Threatened |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Chausey - FR2500079 | Habitats Directive | 82,943 | protected area contains site | 18,400 | |
| Chausey - FR2510037 | Birds Directive | 82,426 | protected area contains site | 18,400 | |
| FR038 | Private Reserve | 90 | protected area contained by site | 90 | |
| Iles Chausey | National Marine Hunting Reserve | 54 | protected area contained by site | 54 |
|
| Iles Chausey Maritime | Hunting Reserve | 18,000 | protected area contained by site | 18,000 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Shrubland | Heathland | - |
| Sea | Open Sea | - |
| Coastline | Mud flats & sand flats; Rock stacks and islets; Sand dunes & beaches; Shingle & stony beaches | - |
| Artificial landscapes (terrestrial) | Arable land | - |
Land use
| Land-use | Extent (% of site) |
|---|---|
| agriculture | - |
| fisheries/aquaculture | - |
| tourism/recreation | - |
| urban/industrial/transport | - |
Management considerations There is disturbance from tourism and sailing.
Protection status National High International High18,054 ha of IBA covered by Hunting Reserve (Iles Chausey Maritime, 18,000 ha). 54 ha of IBA covered by Hunting Reserve (Iles Chausey terrestre, 54 ha). 90 ha of IBA covered by Private Reserve (90 ha). 18,000 ha of IBA covered by Special Protection Area (Iles Chausey, 18,000 ha).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Iles Chausey. Downloaded from http://www.birdlife.org on 26/05/2013
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