Shannon and Fergus Estuaries

IBA Justification

The site was identified as important in 2009 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
Whooper Swan Cygnus cygnus LC winter 2002-2006 125-337 individuals B1i, B3, C2
A4iii Species group - waterbirds n/a winter 2002-2006 13,298-43,611 individuals A4iii, C4

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2009).

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
River Shannon and River Fergus Estuaries SPA Special Protection Area (Birds Directive) 32,238 protected area overlaps with site 14,519
Lower River Shannon SAC Site of Community Importance (Habitats Directive) 68,300 protected area contains site 16,718


Habitat (IUCN level 1) Habitat detail Extent (% of site)
Grassland Humid grasslands -
Marine Neritic -
Marine Intertidal -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
urban/industrial/transport -
hunting -
tourism/recreation -

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Shannon and Fergus Estuaries. Downloaded from on 21/02/2024.