Some species adapt to habitat changes, some do not. The pika in the Sierra Nevada mountains are having a similar loss of habitat. It may be that sheep will not become extinct because of this habitat shrinkage, but their overall population may average lower, and their vulnerability to predation could increase.  ADFand G must consider this situation when it regulates hunting. There has already been a general sense, among hunters and backcountry users, of a decline in sheep numbers in several areas of the state, though hard data on numbers is difficult to obtain. To its credit ADF and G has held recent stakeholder meetings on this problem, but I believe solutions were difficult to reach and the initial funds for these meetings have been used up.