Data Zone
The site was identified as internationally important for bird conservation in 2013 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Clark's Grebe Aechmophorus clarkii | LC | resident (-) | present | A4i |
| Black Rail Laterallus jamaicensis | EN | - (-) | present | A1 |
| Bell's Vireo Vireo bellii | LC | breeding (-) | present | A1 |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1993 | Bill Williams River | National Wildlife Refuge (IV) | 100 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Bill Williams River National Wildlife Refuge (USA). Downloaded from
https://datazone.birdlife.org/site/factsheet/bill-williams-river-national-wildlife-refuge-iba-usa on 23/12/2024.