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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Brent Goose Branta bernicla	LC	winter	1997	4,947-8,745 individuals	A4i, B1i, C3
Brent Goose Branta bernicla	LC	passage	1997	1,000-10,000 individuals	A4i, B1i, C3
Common Shelduck Tadorna tadorna	LC	winter	1997	1,728-4,445 individuals	A4i, B1i, C3
Northern Shoveler Spatula clypeata	LC	winter	1997	32-514 individuals	B1i, C3
Northern Shoveler Spatula clypeata	LC	breeding	1997	400-450 breeding pairs	B1i, C3
Little Egret Egretta garzetta	LC	breeding	1997	310 breeding pairs	B1i, C2, C6
Pied Avocet Recurvirostra avosetta	LC	winter	1997	1,450-1,788 individuals	A4i, B1i, B2, C2
Pied Avocet Recurvirostra avosetta	LC	breeding	1997	284-404 breeding pairs	A4i, B1i, B3, C2, C6
Black-winged Stilt Himantopus himantopus	LC	breeding	1995	212-249 breeding pairs	A4i, B1i, C2, C6
Grey Plover Pluvialis squatarola	VU	winter	1997	1,578-6,110 individuals	A4i, B1i, C3
Grey Plover Pluvialis squatarola	VU	passage	1997	3,000 individuals	A4i, B1i, C3
Eurasian Curlew Numenius arquata	NT	winter	1997	700-3,530 individuals	A4i, B1i, B2, C3
Bar-tailed Godwit Limosa lapponica	NT	winter	1997	42-1,090 individuals	A4i, B1i, B2, C2
Bar-tailed Godwit Limosa lapponica	NT	passage	1997	1,500 individuals	A4i, B1i, C2
Dunlin Calidris alpina	NT	winter	1997	4,853-15,582 individuals	B1i, B2, C3
Dunlin Calidris alpina	NT	passage	1997	10,000-20,000 individuals	B1i, C3
Common Redshank Tringa totanus	LC	breeding	1997	676-816 breeding pairs	B1i, C3
Common Tern Sterna hirundo	LC	breeding	1997	42-50 breeding pairs	C6
Short-eared Owl Asio flammeus	LC	breeding	1995	2-5 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1997	80-120 breeding pairs	C6
Montagu's Harrier Circus pygargus	LC	breeding	1995	50-100 breeding pairs	B3, C6
Black Kite Milvus migrans	LC	breeding	1995	10-30 breeding pairs	C6
Bluethroat Luscinia svecica	LC	breeding	1995	500-600 breeding pairs	C6
A4iii Species group - waterbirds	n/a	passage	1997	20,000-49,999 individuals	A4iii, C4
A4iii Species group - waterbirds	n/a	winter	1997	20,000-49,999 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2000) may differ.

Year	Protected Area	Designation	% overlap with IBA
-	LPO-BirdLife Parcels	Private Reserve	1
-	Baie de Bourgneuf	Hunting Reserve	9
1995	Marais Breton; baie de Bourgneuf, île de Noirmoutier et forêt de Monts	Site of Community Importance (Habitats Directive)	92
2004	MARAIS BRETON - BEAUVOIR	Terrain acquis par le Conservatoire du Littoral	<1
2006	Marais Breton; baie de Bourgneuf, île de Noirmoutier et forêt de Monts	Special Protection Area (Birds Directive)	94
2006	Estuaire de la Loire - Baie de Bourgneuf	Special Protection Area (Birds Directive)	2
2008	Estuaire de la Loire Sud - Baie de Bourgneuf	Site of Community Importance (Habitats Directive)	2
2008	Polder de Sébastopol	Réserve naturelle régionale	<1
2010	MARAIS BRETON - BOUIN	Terrain acquis par le Conservatoire du Littoral	<1
2017	Marais Breton, Baie de Bourgneuf, Ile de Noirmoutier et Forêt de Monts	Ramsar Site, Wetland of International Importance	94

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands	-
Marine Coastal/Supratidal		-
Marine Intertidal		-
Marine Neritic		-

1. IUCN Habitat classification.

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

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Baie de Bourgneuf et marais breton (France). Downloaded from https://datazone.birdlife.org/site/factsheet/baie-de-bourgneuf-et-marais-breton-iba-france on 22/11/2024.