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Location Denmark, Viborg Amtskommune
Central coordinates 8o 15.00' East  56o 45.00' North
IBA criteria B1i, C3
Area 5,490 ha
Altitude 0 - 2m
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description Coastal peninsula with an enclosed brackish lagoon, grazing-meadows and shallow fjord area with shoals, banks, intertidal flats and saltmarshes.

Key Biodiversity The numbers of most wintering and passage species have declined markedly since 1983 (formerly more than 20,000 waterbirds), when the site was designated as a Special Protection Area. The most recent available breeding bird data are from 1988 when several species, listed on Annex I of the EC Birds Directive, were recorded breeding at the site, including Recurvirostra avosetta, Philomachus pugnax, Sterna sandvicensis, S. hirundo and S. paradisaea.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Brent Goose Branta bernicla passage  1994  1,160 individuals  good  B1i, C3  Least Concern 

IBA Monitoring

2010 not assessed very unfavourable not assessed
Good - based on reliable and complete / representative data

Tadorna tadorna Common Shelduck 2850 860 individuals 31 very unfavourable
Mergus serrator Red-breasted Merganser 700 175 individuals 25 very unfavourable
Pluvialis apricaria Eurasian Golden Plover 1 1 breeding pairs 100 favourable
Limosa lapponica Bar-tailed Godwit 5000 940 individuals 19 very unfavourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Agger Tange Major Conservation Area 6,100 protected area contains site 5,490  
Nissum Bredning with Harboore and Agger Tange Wetlands of International Importance (Ramsar) 12,772 protected area contains site 5,490  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Tidal rivers and enclosed tidal waters  -
Coastline Lagoons; Salt marshes; Sand dunes & beaches  -

Land use

Land-use Extent (% of site)
unknown -

Protection status National Partial International High5,490 ha of IBA covered by Special Protection Area (Agger Tange and Krik Vig, 5,490 ha). 5,490 ha of IBA covered by Ramsar Site (Harboøre and Agger Tange, 12,772 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Agger Tange and Krik Vig. Downloaded from on 21/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife