Oak Hammock Marsh WMA

IBA Criteria

Year of most recent IBA criteria assessment: 2008

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
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 unknown 1985 5,000 individuals A4i
A4iii Species group - waterbirds n/a passage - 100,000-499,999 individuals A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap 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


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

Land use

Land-use Extent (% of site)
nature conservation and research -
hunting -
tourism/recreation -
water management -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Oak Hammock Marsh WMA. Downloaded from on 05/10/2022.