From the Jackson Hole News & Guide:
Ken Mills noticed something amiss with the Pinnacle Peak Pack while flying over the National Elk Refuge in mid-January during his routine wintertime wolf census.
To the veteran wildlife biologist’s eye, the bedded down wolves looked “nervous” and “disturbed.” One howled. The Wyoming Game and Fish Department wolf biologist then switched his telemetry equipment over to the Huckleberry Pack, typically denizens of northern Jackson Hole. The reason for the edgy body language soon became clear.