email a friend
printable version
Location Netherlands, Zuid-Holland
Central coordinates 4o 33.00' East  52o 7.00' North
IBA criteria A4i, B1i, B2, C2, C6
Area 770 ha
Year of IBA assessment 2000

Vogelbescherming Nederland

Site description An area of wet meadows and improved grassland located to the south-east of the city of Leiden.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Tundra Swan Cygnus columbianus winter  1989-1993  248 individuals  good  A4i, B1i, B2, C2, C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
De Wilck Nature Reserve 127 protected area contained by site 127  


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial Highly improved re-seeded landscapes  99%

Land use

Land-use Extent (% of site)
tourism/recreation 10%
agriculture 100%
nature conservation and research 17%

Protection status National Partial International None127 ha of IBA covered by Nature Reserve (De Wilck, 127 ha).

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: De Wilck. Downloaded from on 29/10/2016

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