Castro Marim

Country/territory: Portugal

IBA Criteria met: A4i, B1i, B2, C2, C6 (2002)
For more information about IBA criteria please click here

Area: 2,147 ha

Sociedade Portuguesa para o Estudo das Aves
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2005 low not assessed not assessed
For more information about IBA monitoring please click here

Site description
The Portuguese side of the Guadiana estuary, at the country's south-east corner. There is an extensive area of saltpans and of claimed land (used for cattle and sheep-grazing) that was formerly saltmarsh.

Key biodiversity
Important numbers of breeding, wintering and migrating waterbirds use this site, as do some steppic species such as Tetrax tetrax, Burhinus oedicnemus, Glareola prantincola and Melanocorypha calandra. This is the only portuguese site where Calandrella rufescens breeds. Untill 1999 Falco naumanni bred at this site.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Castro Marim. Downloaded from on 09/02/2023.