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Location Spain, Cataluña
Central coordinates 3o 13.00' East  42o 2.00' North
IBA criteria A4i, A4iii, B1i, C3, C4, C6
Area 21 ha
Altitude 0 - 75m
Year of IBA assessment 2000


Site description A small, scrub-covered island and six more islets 1 km off Cape Estartit, on the Costa Brava. The islands are uninhabited. The main activity is tourism.

Key Biodiversity This is an important site for breeding seabirds and for a heron colony. The site has one of the largest Larus cachinnans colonies in the Mediterranean

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Cattle Egret Bubulcus ibis resident  1996  1,081 breeding pairs  good  A4i, B1i, C3  Least Concern 
Black-crowned Night-heron Nycticorax nycticorax breeding  1996  120 breeding pairs  good  C6  Least Concern 
Egretta garzetta resident  1996  49 breeding pairs  good  C6  Not Recognised 
European Shag Phalacrocorax aristotelis resident  1996  8 breeding pairs  good  C6  Least Concern 
Larus cachinnans resident  1996  13,666 breeding pairs  good  A4i, B1i, C3  Not Recognised 
A4iii Species group - waterbirds resident  1996  10,000-19,999 breeding pairs  unknown  A4iii, C4   

IBA Monitoring

2008 very high not assessed low
Poor - based on little, or potentially unreliable/unrepresentative, data

Human intrusions and disturbance recreational activities happening now whole area/population (>90%) moderate to rapid deterioration very high
Invasive & other problematic species, genes & diseases problematic native species/diseases - named species happening now whole area/population (>90%) very rapid to severe deterioration very high

Whole area of site (>90%) covered by appropriate conservation designation  Not assessed  Not assessed  low 


IUCN habitat Habitat detail Extent (% of site)
Shrubland Sclerophyllous scrub, garrigue and maquis  -
Sea Sea inlets and coastal features  -
Coastline Rock stacks and islets; Sea cliffs and rocky shores  90%

Land use

Land-use Extent (% of site)
tourism/recreation 100%

Protection status National None International None

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Medas islands. Downloaded from on 25/10/2016

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