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The site was identified as internationally important for bird conservation in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Brent Goose Branta bernicla	LC	winter (1997)	31,841–39,701 birds	A4i, B1i, C3
Greylag Goose Anser anser	LC	passage (1997)	15,000–20,000 birds	A4i, B1i, C3
Northern Shoveler Spatula clypeata	LC	passage (1997)	1,000–2,000 birds	B1i, C3
Northern Pintail Anas acuta	LC	winter (1997)	680–2,560 birds	B1i, C3
Northern Pintail Anas acuta	LC	passage (1997)	3,000–5,000 birds	B1i, C3
White Stork Ciconia ciconia	LC	breeding (1997)	3 pairs	C6
Eurasian Spoonbill Platalea leucorodia	LC	winter (1997)	20–37 birds	B1i, C2
Eurasian Spoonbill Platalea leucorodia	LC	passage (1997)	100 birds	B1i, C2
Little Egret Egretta garzetta	LC	winter (1997)	55–1,810 birds	A4i, B1i, C2
Little Egret Egretta garzetta	LC	breeding (1997)	630 pairs	A4i, B1i, C2, C6
Pied Avocet Recurvirostra avosetta	LC	winter (1997)	8–136 birds	B2
Pied Avocet Recurvirostra avosetta	LC	passage (1997)	2,000–3,000 birds	A4i, B1i, C2
Grey Plover Pluvialis squatarola	VU	passage (1997)	2,000–3,000 birds	A4i, B1i, C3
Common Ringed Plover Charadrius hiaticula	LC	winter (1997)	18–105 birds	A4i, B1i, C3
Kentish Plover Charadrius alexandrinus	LC	breeding (1997)	30–40 pairs	B2
Eurasian Curlew Numenius arquata	NT	winter (1997)	310–2,501 birds	B2
Bar-tailed Godwit Limosa lapponica	NT	passage (1997)	2,000–3,000 birds	A4i, B1i, C2
Red Knot Calidris canutus	NT	passage (1997)	3,000–50,000 birds	A4i, B1i, C3
Curlew Sandpiper Calidris ferruginea	VU	passage (1997)	1,000–20,000 birds	A4i, B1i, C3
Dunlin Calidris alpina	NT	winter (1997)	13,843–25,000 birds	A4i, B1i, B2, C3
Dunlin Calidris alpina	NT	passage (1997)	20,000–30,000 birds	A4i, B1i, C3
Spotted Redshank Tringa erythropus	LC	passage (1997)	500–1,000 birds	A4i, B1i, C3
Common Redshank Tringa totanus	LC	passage (1997)	1,000–2,000 birds	B1i, C3
Sandwich Tern Thalasseus sandvicensis	LC	breeding (1997)	4,200 pairs	A4i, B1i, B2, C2
Osprey Pandion haliaetus	LC	passage (1991)	10 birds	C6
Short-toed Snake-eagle Circaetus gallicus	LC	breeding (1991)	5 pairs	C6
Hen Harrier Circus cyaneus	LC	breeding (1991)	3–5 pairs	C6
Black Kite Milvus migrans	LC	breeding (1991)	30 pairs	C6
Bluethroat Luscinia svecica	LC	breeding (1991)	120–130 pairs	C6
A4iii Species group - waterbirds	n/a	passage (1997)	50,000-99,999 birds	A4iii, C4
A4iii Species group - waterbirds	n/a	winter (1997)	50,000-99,999 birds	A4iii, C4

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Parc ornithologique du Teich	Private Reserve (-)	<1
-	Pres d'Ares et de Lege	Nature Reserve (-)	2
-	Bassin d'Arcachon	Hunting Reserve (-)	2
1970	Landes de Gascogne	Parc naturel régional (V)	6
1972	Banc d'Arguin	Réserve naturelle nationale (IV)	3
1980	DUNES DU CAP FERRET	Terrain acquis par le Conservatoire du Littoral (IV)	<1
1982	ILE DE MALPRAT - PORT DES TUILES	Terrain acquis par le Conservatoire du Littoral (IV)	<1
1982	SAINT-BRICE - LE COULIN	Terrain acquis par le Conservatoire du Littoral (IV)	<1
1983	Prés salés d'Arès et de Lège-Cap-Ferret	Réserve naturelle nationale (IV)	2
1984	DOMAINE DE CERTES ET DE GRAVEYRON	Terrain acquis par le Conservatoire du Littoral (IV)	2
1992	Fleury - Delta de l'Eyre	Terrain acquis par le Conservatoire du Littoral (IV)	<1
1998	DUNE DU PILAT	Terrain acquis par le Conservatoire du Littoral (IV)	<1
2000	RESERVE NATURELLE DES PRES SALES	Terrain acquis par le Conservatoire du Littoral (IV)	1
2004	ILE AUX OISEAUX	Terrain acquis par le Conservatoire du Littoral (IV)	1
2006	Banc d'Arguin	Marine Protected Area (OSPAR) (UA)	4
2012	Bassin d'Arcachon et Cap Ferret	Marine Protected Area (OSPAR) (UA)	58
2013	PRES-SALES EST DE LA TESTE DE BUCH	Terrain acquis par le Conservatoire du Littoral (IV)	<1
2014	Bassin d'Arcachon	Parc naturel marin (V)	87

Habitat	% of IBA	Habitat detail
Forest	major (>10)	Broadleaved deciduous woodland
Grassland	major (>10)	Humid grasslands
Marine Coastal/Supratidal	major (>10)
Marine Intertidal	major (>10)
Marine Neritic	major (>10)
Artificial/Aquatic & Marine	minor (<10)

Land use	% of IBA
fisheries/aquaculture	-
hunting	-
tourism/recreation	-
urban/industrial/transport	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Bassin d'Arcachon et Banc d'Arguin (France). Downloaded from https://datazone.birdlife.org/site/factsheet/bassin-darcachon-et-banc-darguin-iba-france on 22/12/2024.