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Location USA, Indiana
Central coordinates 85o 22.20' West  38o 58.13' North
IBA criteria A1
Area 20,240 ha
Year of IBA assessment 2009


Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Cerulean Warbler Dendroica cerulea breeding  2003  51 breeding pairs  good  A1  Vulnerable 
Henslow's Sparrow Ammodramus henslowii breeding  2004  629 breeding pairs  poor  A1  Near Threatened 

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Big Oaks National Wildlife Refuge. Downloaded from on 21/10/2016

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