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Location Denmark, Ribe Amtskommune
Central coordinates 8o 15.00' East  55o 42.00' North
IBA criteria A4i, A4iii, B1i, B2, B3, C2, C3, C4, C6
Area 4,270 ha
Altitude 0 - 27m
Year of IBA assessment 2000

Dansk Ornitologisk Forening



Site description Mainly open agricultural land on a drained former lake with some small plantations. The site also includes two shallow lakes surrounded by reedbeds with Alnus forest and some heathland.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta non-breeding  1994  3,000 individuals  medium  B1i, C3  Least Concern 
Pink-footed Goose Anser brachyrhynchus passage  1994  30,000 individuals  good  A4i, B1i, C3  Least Concern 
Greylag Goose Anser anser passage  1994  22,000 individuals  medium  A4i, B1i, C3  Least Concern 
Whooper Swan Cygnus cygnus winter  1994  471 individuals  good  B1i, B3, C2  Least Concern 
Tundra Swan Cygnus columbianus winter  1995  479 individuals  good  A4i, B1i, B2, C2, C6  Least Concern 
A4iii Species group - waterbirds passage  1994  50,000-99,999 individuals  unknown  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Blåbjerg Egekrat, Lyngbos Hede og Hennegårds Klitter - DK00AX172 Habitats Directive 694 protected area is adjacent to site 0  
Fiilsø - DK00AX056 Birds Directive 4,248 is identical to site 4,138  
Filso Wetlands of International Importance (Ramsar) 4,270 protected area contains site 4,270  
Kallesmærsk Hede, Grærup Langsø, Fiilsø og Kærgård Klitplantage - DK00AX173 Habitats Directive 11,636 protected area contains site 4,270  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Shrubland Heathland  20%
Wetlands (inland) Standing freshwater  80%

Land use

Land-use Extent (% of site)
agriculture 40%
forestry 5%
unknown 55%

Protection status National Partial International High4,270 ha of IBA covered by Ramsar Site (Fiilsø, 4,320 ha). 1,994 ha of IBA covered by Special Protection Area (Fiilsø, 1,994 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Fiilsø. Downloaded from http://www.birdlife.org on 22/08/2014

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