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Location United Kingdom, East Anglia
Central coordinates 0o 3.20' West  52o 35.00' North
IBA criteria A4i, A4iii, B1i, B2, C2, C3, C4, C6
Area 1,505 ha
Altitude 2 - 3m
Year of IBA assessment 2007

Royal Society for the Protection of Birds

Site description The cycle of winter storage of flood-waters and traditional summer cattle-grazing at this site has given rise to a mosaic of rough grassland and wet pasture, with a diverse ditch flora. The IBA supports a variety of breeding ducks and waders, and is important for wintering wildfowl.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta winter  2001-2006  1,423 individuals  good  B1i, C3  Least Concern 
Tundra Swan Cygnus columbianus winter  2001-2006  738 individuals  good  A4i, B1i, B2, C2, C6  Least Concern 
Corncrake Crex crex breeding  2007  4 males only  good  C6  Least Concern 
Spotted Crake Porzana porzana breeding  2006  3 males only  good  C6  Least Concern 
Black-tailed Godwit Limosa limosa breeding  2007  41 males only  good  B2, C6  Near Threatened 
Ruff Calidris pugnax winter  2001-2006  90 individuals  good  C6  Least Concern 
A4iii Species group - waterbirds winter  2001-2006  29,008 individuals  good  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Nene Washes Birds Directive 1,517 is identical to site 1,505  
Nene Washes RSPB Reserve 2,470 protected area overlaps with site 1,252  
Nene Washes Wetlands of International Importance (Ramsar) 1,517 is identical to site 1,505  
Nene Washes (Whittlesey) Site of Special Scientific Interest 1,512 is identical to site 1,505  


IUCN habitat Habitat detail Extent (% of site)
Grassland Humid grasslands  -
Wetlands (inland) Standing freshwater; Tidal rivers and enclosed tidal waters; Water fringe vegetation  -

Land use

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

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Nene Washes. Downloaded from on 25/10/2014

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