Oak Hammock Marsh WMA

IBA Justification

The site was identified as important in 2008 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
Canada Goose Branta canadensis LC passage 1995 200,000 individuals A4i
Snow Goose Anser caerulescens LC passage 1996 250,000 individuals A4i
Short-billed Dowitcher Limnodromus griseus LC breeding 1985 5,000 individuals A4i
A4iii Species group - waterbirds n/a passage - 100,000-499,999 individuals A4iii

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2008).

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Oak Hammock Marsh Wildlife Management Area Wildlife Management Area 3,578 protected area contained by site 3,600
Oak Hammock Marsh Ramsar Site, Wetland of International Importance 3,600 protected area contained by site 3,300


Habitat (IUCN level 1) Habitat detail Extent (% of site)
Forest Temperate deciduous -
Shrubland Scrub -
Grassland Steppe & dry calcareous, Edaphic -
Wetlands (inland) Rivers, Freshwater marshes & swamps, Bogs -
Artificial/Terrestrial Other urban & industrial areas, Arable land -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
hunting -
tourism/recreation -
water management -

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Oak Hammock Marsh WMA. Downloaded from on 06/12/2023.