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Location Denmark, Nordjyllands Amtskommune
Central coordinates 10o 38.00' East  57o 29.00' North
IBA criteria A4i, B1i, B1ii, B2, B3, C6
Area 220 ha
Altitude 0 - 6m
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description The IBA comprises stony islets and an area of saltmarsh between Frederikshavn and Strandby. Only the main island of Hirsholm is inhabited. Marine areas surrounding this IBA (and previously included within it, following Grimmett and Jones 1989) are now included in site 119.

Key Biodiversity This is an important area for breeding gulls and terns including Sterna sandvicensis, S. hirundo and S. paradisaea, listed on Annex I of the EC Birds Directive.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Black-backed Gull Larus marinus breeding  1994  240 breeding pairs  good  B3  Least Concern 
Lesser Black-backed Gull Larus fuscus breeding  1994  775 breeding pairs  good  B3  Least Concern 
Sandwich Tern Thalasseus sandvicensis breeding  1994  1,356 breeding pairs  good  A4i, B1i, B2, C6  Least Concern 
Common Tern Sterna hirundo breeding  1994  175 breeding pairs  good  C6  Least Concern 
Black Guillemot Cepphus grylle breeding  1994  490 breeding pairs  good  B1ii  Least Concern 

IBA Monitoring

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

Recurvirostra avosetta Pied Avocet 1 1 breeding pairs 100 favourable
Cepphus grylle Black Guillemot 1900 1900 individuals 100 favourable

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Hirsholmene Baltic Sea Protected Area (Helcom) 9,480 protected area contains site 220  
Hirsholmene Wetlands of International Importance (Ramsar) 374 protected area contains site 220  
Waters around Hirsholmene Major Conservation Area 920 protected area contains site 220  


IUCN habitat Habitat detail Extent (% of site)
Coastline Salt marshes; Sand dunes & beaches  100%

Land use

Land-use Extent (% of site)
nature conservation and research 100%

Protection status National Partial International High220 ha of IBA covered by Ramsar Site (Hirsholmene, 480 ha). 220 ha of IBA covered by Special Protection Area (Hirsholmene, 3,740 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Hirsholmene. Downloaded from on 26/10/2016

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