The recent killings of wolves in the Northern Rocky Mountains states have killed approximately 16% of the wolf population, and about 20% of the wolf population in the Rockies.

These current killings alone don't threaten the persistence of the species in the area, but do threaten the ability of the population to fulfill it's ecological function. They also are but one year's worth of what is liable to be a policy of many years, unless people intervene.

The Fish and Wildlife Service is currently reviewing the status of gray wolves in these states and may list them.

EDIT: Well, regardless of what the Fish and Wildlife Service says, federal protections are restored for the subpopulation.