Medas islands

IBA Justification

The site was identified as important in 2011 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
Black-crowned Night-heron Nycticorax nycticorax LC breeding 2008 146 breeding pairs C2, C6
European Shag Gulosus aristotelis LC resident 2007-2010 35-42 breeding pairs C6
A4iii Species group - waterbirds n/a resident 1996 10,000-19,999 breeding pairs A4iii, C4

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2011).

IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2008 not assessed very high low
Was the whole site assessed? State assessed by Accuracy of information
yes unset poor

Pressure (threats to the trigger species and/or their habitats)
Threat level 1 Threat level 2 Timing Scope Severity Result
Human intrusions and disturbance recreational activities happening now whole area/population (>90%) moderate to rapid deterioration very high
Invasive and other problematic species and genes problematic native species/diseases - named species happening now whole area/population (>90%) very rapid to severe deterioration very high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation Management planning Other conservation action Result
Whole area of site (>90%) covered by appropriate conservation designation Not assessed Not assessed low
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Marina de Les Medes Reserva Natural Parcial 100 protected area contains site 0
Les Illes Medes Reserva Natural Integral 23 protected area overlaps with site 0
Islas Medas Specially Protected Areas of Mediterranean Importance (Barcelona Convention) 603 protected area contains site 0
Illes Medes Plan Especial de Protección (PEIN) 469 protected area contains site 0
El Montgrí- Les Medes - El Baix Ter Special Protection Area (Birds Directive) 6,464 protected area contains site 21
El Montgrí- Les Medes - El Baix Ter Site of Community Importance (Habitats Directive) 6,464 protected area contains site 0
Del Montgrí, les Illes Medes i el Baix Ter Parque Natural 8,244 protected area contains site 0


Habitat (IUCN level 1) Habitat detail Extent (% of site)
Shrubland Sclerophyllous scrub, garrigue and maquis -
Marine Neritic -
Marine Coastal/Supratidal -
For more information about the IUCN Habitat classification, please click here.

Land use

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

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Medas islands. Downloaded from on 22/09/2023.