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Location United Kingdom, South East
Central coordinates 0o 56.33' West  50o 48.34' North
IBA criteria A4i, A4iii, B1i, B2, C2, C3, C4, C6
Area 5,795 ha
Altitude 0 - 7m
Year of IBA assessment 2007

Royal Society for the Protection of Birds



Site description This site covers two harbours joined by a stretch of water that separates Hayling Island from the mainland. Tidal channels drain the river basins and penetrate far inland. Habitats include extensive mudflats and associated saltmarshes, sand-dunes, islands, and areas of Juncus marsh and reedbed (Phragmites). The IBA is important for breeding terns and wintering and passage wildfowl and waders.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Brent Goose Branta bernicla winter  2001-2006  12,424 individuals  good  A4i, B1i, C3  Least Concern 
Grey Plover Pluvialis squatarola passage  2001-2006  2,005 individuals  good  A4i, B1i, C3  Least Concern 
Grey Plover Pluvialis squatarola winter  2001-2006  2,644 individuals  good  A4i, B1i, C3  Least Concern 
Common Ringed Plover Charadrius hiaticula passage  2001-2006  502 individuals  good  B1i, C3  Least Concern 
Common Redshank Tringa totanus passage  2001-2006  2,700 individuals  good  B1i, C3  Least Concern 
Common Redshank Tringa totanus winter  2001-2006  2,670 individuals  good  B1i, C3  Least Concern 
Black-tailed Godwit Limosa limosa passage  2001-2006  1,328 individuals  good  B1i, C3  Near Threatened 
Black-tailed Godwit Limosa limosa winter  2001-2006  890 individuals  good  B1i, C3  Near Threatened 
Bar-tailed Godwit Limosa lapponica passage  2001-2006  377 individuals  good  B2, C6  Least Concern 
Bar-tailed Godwit Limosa lapponica winter  2001-2006  1,009 individuals  good  A4i, B1i, B2, C2, C6  Least Concern 
Eurasian Curlew Numenius arquata winter  2001-2006  2,047 individuals  good  B2  Near Threatened 
Dunlin Calidris alpina passage  2001-2006  8,184 individuals  good  B2  Least Concern 
Dunlin Calidris alpina winter  2001-2006  31,278 individuals  good  A4i, B1i, B2, C3  Least Concern 
Mediterranean Gull Larus melanocephalus breeding  2001  47 breeding pairs  good  C6  Least Concern 
Sandwich Tern Thalasseus sandvicensis breeding  2000  88 breeding pairs  good  C6  Least Concern 
Sandwich Tern Thalasseus sandvicensis breeding  2006  204 breeding pairs  good  B2, C6  Least Concern 
Little Tern Sternula albifrons breeding  2000  130 breeding pairs  good  B2, C2  Least Concern 
Little Tern Sternula albifrons breeding  2006  68 breeding pairs  good  B2, C2  Least Concern 
A4iii Species group - waterbirds passage  2001-2006  29,142 individuals  good  A4iii, C4   
A4iii Species group - waterbirds winter  2001-2006  81,571 individuals  good  A4iii, C4   

IBA Monitoring

2007 high very unfavourable medium
Population
Good - based on reliable and complete / representative data

Climate change and severe weather habitat shifting and alteration 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
Residential and commercial development tourism and recreation areas likely in short term (within 4 years) small area/few individuals (<10%) slow but significant deterioration low
Transportation and service corridors roads and railroads likely in short term (within 4 years) small area/few individuals (<10%) slow but significant deterioration low

Branta bernicla Brent Goose 16600 12424 individuals 75 near favourable
Pluvialis squatarola Grey Plover 3350 2005 individuals 60 unfavourable
Pluvialis squatarola Grey Plover 3770 2644 individuals 71 near favourable
Charadrius hiaticula Common Ringed Plover 1810 502 individuals 28 very unfavourable
Charadrius hiaticula Common Ringed Plover 875 430 individuals 50 unfavourable
Tringa totanus Common Redshank 1980 2700 individuals 100 favourable
Tringa totanus Common Redshank 1860 2670 individuals 100 favourable
Limosa limosa Black-tailed Godwit 1090 890 individuals 82 near favourable
Limosa limosa Black-tailed Godwit 1110 1328 individuals 100 favourable
Limosa lapponica Bar-tailed Godwit 1760 1009 individuals 58 unfavourable
Limosa lapponica Bar-tailed Godwit 1180 377 individuals 32 very unfavourable
Numenius arquata Eurasian Curlew 1820 2047 individuals 100 favourable
Calidris alpina Dunlin 47400 31278 individuals 66 unfavourable
Calidris alpina Dunlin 22700 8184 individuals 37 very unfavourable
Thalasseus sandvicensis Sandwich Tern 88 204 breeding pairs 100 favourable
Sternula albifrons Little Tern 130 68 breeding pairs 53 unfavourable
Species group - waterbirds A4iii 40171 29142 individuals 73 near favourable
Species group - waterbirds A4iii 95083 81571 individuals 86 near favourable

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Some limited conservation initiatives are in place  medium 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Chichester and Langstone Harbours Birds Directive 5,805 is identical to site 5,795  
Chichester and Langstone Harbours Wetlands of International Importance (Ramsar) 5,810 is identical to site 5,795  
Chichester Harbour Area of Outstanding Natural Beauty 7,400 protected area overlaps with site 3,700  
Chichester Harbour Site of Special Scientific Interest 3,733 protected area contained by site 3,729  
Langstone Harbour RSPB Reserve 558 protected area contained by site 558  
Langstone Harbour Site of Special Scientific Interest 2,086 protected area contained by site 2,080  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland  -
Shrubland Scrub  -
Grassland   -
Wetlands (inland) Coastal lagoons; Mud flats and sand flats; Salt marshes; Sand dunes and beaches; Shingle or stony beaches; Standing freshwater; Tidal rivers and enclosed tidal waters; Water fringe vegetation  -

Land use

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

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Chichester and Langstone Harbours. Downloaded from http://www.birdlife.org on 27/11/2014

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