Grevelingen This is an IBA in danger! 

IBA Criteria

Year of most recent IBA criteria assessment: 2016

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Whooper Swan Cygnus cygnus LC winter 2011-2016 48 individuals B3
Tundra Swan Cygnus columbianus LC non-breeding 2011-2016 495 individuals B1i, C2, C6
Brent Goose Branta bernicla LC non-breeding 2011-2016 5,446-8,067 individuals B1i, C3
Barnacle Goose Branta leucopsis LC non-breeding 2011-2016 18,204-20,182 individuals A4i, B1i, C2
Red-breasted Merganser Mergus serrator LC breeding 2011-2016 26-35 breeding pairs B2
Red-breasted Merganser Mergus serrator LC non-breeding 2011-2016 5,258-6,738 individuals B1i, C3
Red-breasted Merganser Mergus serrator LC winter 2011-2016 4,730 individuals B2
Common Shelduck Tadorna tadorna LC non-breeding 2011-2016 2,953-5,369 individuals B1i, C3
Eurasian Wigeon Mareca penelope LC non-breeding 2011-2016 15,050-20,620 individuals B1i, C3
Horned Grebe Podiceps auritus VU non-breeding 2011-2016 18-31 individuals C6
Horned Grebe Podiceps auritus VU winter 2011-2016 10 individuals B2
Black-necked Grebe Podiceps nigricollis LC non-breeding 2011-2016 2,710-4,401 individuals B1i, C3
Common Coot Fulica atra LC winter 2011-2016 6,156-15,891 individuals B2
Eurasian Spoonbill Platalea leucorodia LC non-breeding 2011-2016 197-220 individuals B1i, C2
Little Egret Egretta garzetta LC non-breeding 2011-2016 37-60 individuals C6
Pied Avocet Recurvirostra avosetta LC breeding 2011-2016 225-323 breeding pairs C6
Common Ringed Plover Charadrius hiaticula LC breeding 2011-2016 17-23 breeding pairs B3
Kentish Plover Charadrius alexandrinus LC non-breeding 2011-2016 69-109 individuals C6
Kentish Plover Charadrius alexandrinus LC breeding 2011-2016 54-76 breeding pairs C6
Mew Gull Larus canus LC breeding 2011-2016 248-280 breeding pairs B3
European Herring Gull Larus argentatus LC breeding 2011-2016 2,516-3,116 breeding pairs B2
Great Black-backed Gull Larus marinus LC breeding 2011-2016 19-26 breeding pairs B3
Little Tern Sternula albifrons LC breeding 2011-2016 143-172 breeding pairs B1i, C6
Arctic Tern Sterna paradisaea LC breeding 2009-2014 min 51 breeding pairs C6
Sandwich Tern Thalasseus sandvicensis LC breeding 2011-2016 2,479-4,479 breeding pairs A4i, B1i, B3, C2, C6
Peregrine Falcon Falco peregrinus LC non-breeding 2011-2016 12-14 individuals C6
A4iii Species group - waterbirds n/a non-breeding 2011-2016 63,492-77,730 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

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2018 very high not assessed high
Was the whole site covered? Yes State assessed by unset
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Energy production and mining renewable energy likely in short term (within 4 years) whole area/population (>90%) very rapid to severe deterioration very high
Human intrusions and disturbance recreational activities happening now whole area/population (>90%) very rapid to severe deterioration very high
Residential and commercial development tourism and recreation areas happening now whole area/population (>90%) very rapid to severe deterioration very high

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity high
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Grevelingen Natuurbeschermingswet 13,753 is identical to site 0
Grevelingen Special Protection Area (Birds Directive) 13,753 is identical to site 13,826
Grevelingen Site of Community Importance (Habitats Directive) 13,753 is identical to site 13,810
Grevelingen Ramsar Site, Wetland of International Importance 13,900 protected area contains site 13,900


IUCN Habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing brackish and salt water -
Artificial/Terrestrial Highly improved re-seeded landscapes -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
water management -
hunting -
nature conservation and research -
tourism/recreation -
agriculture -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Grevelingen. Downloaded from on 18/06/2021.