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Location United Kingdom, South East
Central coordinates 0o 4.09' East  51o 3.67' North
IBA criteria B2, C6
Area 3,197 ha
Altitude 111 - 218m
Year of IBA assessment 2007

Royal Society for the Protection of Birds

Site description A large expanse of woodland and heathland cut by streams, with scattered boggy areas. The heathland and woodland support a typical range of species.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
European Nightjar Caprimulgus europaeus breeding  2004  85 breeding pairs  good  B2, C6  Least Concern 
Dartford Warbler Sylvia undata resident  2006  38 breeding pairs  good  C6  Near Threatened 

IBA Monitoring

2007 medium favourable high
Good - based on reliable and complete / representative data

Agriculture and aquaculture livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming happening now some of area/population (10-49%) slow but significant deterioration medium
Agriculture and aquaculture wood and pulp plantations (includes afforestation) - small-holder plantations happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications other ecosystem modifications happening now some of area/population (10-49%) slow but significant deterioration medium

Caprimulgus europaeus European Nightjar 36 85 males only 100 favourable
Sylvia undata Dartford Warbler 29 38 males only 100 favourable

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 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ashdown Forest Site of Special Scientific Interest 3,209 is identical to site 3,197  
High Weald Area of Outstanding Natural Beauty 146,000 protected area contains site 3,197  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland  -
Shrubland Heathland  -
Wetlands (inland) Fens, transition mires and springs; Rivers and streams; Standing freshwater  -

Land use

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

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Ashdown Forest. Downloaded from on 27/10/2016

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