• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Brent Goose Branta bernicla	LC	non-breeding	1986-1990	30,423 individuals	A4i, B1i, C3
Barnacle Goose Branta leucopsis	LC	winter	1988-1990	35,636 individuals	A4i, B1i, B2, C2, C6
Common Shelduck Tadorna tadorna	LC	non-breeding	1988-1990	14,545 individuals	A4i, B1i, C3
Eurasian Wigeon Mareca penelope	LC	winter	1986-1990	18,984 individuals	A4i, B1i, C3
Haematopus ostralegus	NR	non-breeding	1988-1990	41,373 individuals	A4i, B1i, C3
Pied Avocet Recurvirostra avosetta	LC	non-breeding	1985-1990	4,618 individuals	A4i, B1i, C2, C6
Pied Avocet Recurvirostra avosetta	LC	breeding	1991-1993	2,241 breeding pairs	A4i, B1i, B3, C2, C6
Grey Plover Pluvialis squatarola	LC	non-breeding	1986-1990	6,616 individuals	A4i, B1i, C3
Eurasian Curlew Numenius arquata	NT	non-breeding	1987-1990	24,764 individuals	A4i, B1i, C3
Eurasian Curlew Numenius arquata	NT	winter	1986-1990	15,054 individuals	A4i, B1i, B2, C3
Bar-tailed Godwit Limosa lapponica	NT	passage	1988-1990	14,521 individuals	A4i, B1i, C2, C6
Dunlin Calidris alpina	LC	non-breeding	1986-1990	42,094 individuals	A4i, B1i, C3
Dunlin Calidris alpina	LC	winter	1986-1990	9,161 individuals	B2
Spotted Redshank Tringa erythropus	LC	non-breeding	1988-1990	729 individuals	A4i, B1i, C3
Common Redshank Tringa totanus	LC	non-breeding	1988-1990	5,653 individuals	A4i, B1i, C3
A4iii Species group - waterbirds	n/a	non-breeding	1990	100,000-499,999 individuals	A4iii, C4
A4iii Species group - waterbirds	n/a	winter	1990	50,000-99,999 individuals	A4iii, C4

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Waddenzee I	Natural Monument	125,000	protected area overlaps with site	2,270
Waddenzee (Wadden Sea)	Ramsar Site, Wetland of International Importance	249,998	protected area overlaps with site	8,360
Waddenzee	Natuurbeschermingswet	271,771	protected area contains site	0
Waddenzee	Special Protection Area (Birds Directive)	271,771	protected area contains site	9,310
Waddenzee	Site of Community Importance (Habitats Directive)	264,858	protected area contains site	9,310
Waddensea Area	UNESCO-MAB Biosphere Reserve	260,000	protected area overlaps with site	0
Wadden Sea	Ramsar Site, Wetland of International Importance	249,998	protected area contains site	0
The Wadden Sea	World Heritage Site (natural or mixed)	1,143,403	protected area contains site	9,310
Noord-Friesland buitendijks II	Natural Monument	700	protected area contained by site	700
Noord-Friesland buitendijks	Natural Monument	4,800	protected area contained by site	4,800
Noord Friesland buitendijks	Nature Reserve	940	protected area contained by site	940
Kwelder langs de noordkust van Friesland	Natural Monument	670	protected area contained by site	670

IUCN Habitat	Habitat detail	Extent (% of site)
Coastline	Salt marshes, Mud flats & sand flats	-
Artificial/Terrestrial	Highly improved re-seeded landscapes	-
Marine Intertidal		-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-
fisheries/aquaculture	-
hunting	-
nature conservation and research	-
tourism/recreation	-

For further information about the land use classification please click here.

---

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Frisian Wadden Sea coast. Downloaded from http://www.birdlife.org on 28/11/2022.