You might want to make contact with someone from their department of wildlife/conservation units... I was just advised this morning by a rancher in SE Montana that the dreaded plague had hit his ranch and almost all the PDs were wiped out. He has restricted any hunting for the next three years to allow them to rebuild...
Since he charges $150 per night for Food, Lodging, and transportation on the ranch,,, That's quite a bit of income he's shutting off.. Our group of 4 was looking at 4-5 days there...
At the price of fuel, ammo, etc, you don't want to make a trip up there and find everything gone..
We experienced roughly the same thing in SE Colorado two years ago. While it didn't hit the ranch where we go as hard as two others we have access to, the other two were desolate as far as the PDs were concerned.