Year of most recent IBA criteria assessment: 2009Populations of IBA trigger species
|Species||Current IUCN Red List Category||Season||Year(s) of estimate||Population estimate||IBA Criteria Triggered|
|Henslow's Sparrow Passerculus henslowii||LC||breeding||2004||629 breeding pairs||A1|
|Cerulean Warbler Setophaga cerulea||NT||breeding||2003||51 breeding pairs||A1|
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
BirdLife International (2020) Important Bird Areas factsheet: Big Oaks National Wildlife Refuge. Downloaded from http://www.birdlife.org on 24/09/2020.