A collared, 4-year-old male apparently howled back Aug. 28 while Maxfield was investigating sightings of a gray wolf on the south slope of the Uinta Mountains in Duchesne County.
The wolf would eventually be spotted by at least three groups of people and identified by the frequency of its dying radio collar as part of the Boundary Pack from Idaho's panhandle region near the Canadian border. The wolf roamed roughly 850 miles as the crow flies from where the solitary male was first spotted in Utah.
The multiple sightings this fall come two years after the last reported glimpses of the large carnivores in Utah. In 2012, a coyote-control crew spotted four wild canines — either wolves or wolf-dog hybrids — roaming eastern Utah County.
This most recent wolf was spotted in Yellowstone Canyon north of Altamont when it walked across the road.
It was spotted again by people calling in coyotes, and finally by elk hunters before it appeared to head into Colorado or Wyoming.
The radio collar signal was last picked up in Utah on Sept. 19. Hunters have been out in the mountains of Utah since then and there have been no new reports.
"When Idaho put the collar on him, they estimated the battery life at about a year and half. That was a year and a half ago," Maxfield said. "The signal was not very strong. We think the wolf left the state or its collar died. Since no one has reported seeing him, we think he likely left."
Biologists believe the adult male was probably looking for a female mate in its wanderings and will continue to search until he finds one or takes up residence with a pack along the way.
It is also possible the wolf was killed and the collar destroyed.
Maxfield said he investigates about a dozen wolf sightings each year in northeastern Utah. His howling has drawn just one other response — near Flaming Gorge Reservoir.
The collar worn by the wolf may have included a GPS unit that either sent a signal to a satellite or could have been downloaded upon retrieval, but it seems not to have been working. Utah wildlife officers are trying to track down that information if it is available.
Utah Division of Wildlife Resources (DWR) director Greg Sheehan said this is not the first, or last, time a wolf will visit the state.
"It is amazing to me the distance wildlife will travel," Sheehan said. "What path did he take to get here?"