Mersey Estuary

Country/territory: United Kingdom

IBA Criteria met: A4i, A4iii, B1i, B2, C3, C4 (2007)
For more information about IBA criteria please click here

Area: 5,007 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 low very unfavourable low
For more information about IBA monitoring please click here

Site description
Extensive intertidal areas in the Mersey estuary, including large areas of mudflats and saltmarshes. The estuary is of international importance for wintering wildfowl and waders.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Mersey Estuary. Downloaded from on 29/01/2023.