The Cassia Crossbill is only found on two mountaintops in Idaho. It wasn't considered an Endangered species until now, when one of the two mountains suffered a wildfire, halving the species' habitat:
https://www.audubon.org/news/nearly-half-cassia-crossbills-population-could-be-lost-after-wildfire
https://www.audubon.org/news/nearly-half-cassia-crossbills-population-could-be-lost-after-wildfire