Data Zone
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') at the site:| Species | Red List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Sage Grouse Centrocercus urophasianus | NT | resident | - | present | A1 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2008) may differ.
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 1941 | Lake Mason | National Wildlife Refuge | <1 |
| 1958 | War Horse | National Wildlife Refuge | <1 |
| 1994 | Acid Shale-Pine Forest | Area of Critical Environmental Concern | <1 |
| 2002 | Bull Mountains | Easement | <1 |
| 2013 | GRP_Golden Valley, MT (30037) | Environmental System | <1 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mussellshell Sage-steppe (USA). Downloaded from
https://datazone.birdlife.org/site/factsheet/mussellshell-sage-steppe-iba-usa on 23/11/2024.