Portsmouth Harbour

Country/territory: United Kingdom

IBA Criteria met: C7 (2007)
For more information about IBA criteria please click here

Area: 1,246 ha

Royal Society for the Protection of Birds
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2007 high near favourable medium
For more information about IBA monitoring please click here

Site description
A large industrialized estuary that includes one of the four largest expanses of mudflats and tidal creeks on the south coast of Britain. The IBA holds important numbers of wintering wildfowl and waders. Branta bernicla are the bernicla subspecies.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Portsmouth Harbour. Downloaded from on 22/03/2023.