About 50 pronghorn died near Payette in mid-January, and before that, seven elk died in the Boise foothills.
Idaho Department of Fish and Game
Would have been first increase in 13 years; agency searching for possible alternatives.
In 2015, Idaho hunters killed nearly 70,000 deer and about 25,000 elk, numbers not matched since the 1990s.
Study seeing if intervention from wildlife managers can shorten the time it takes for bighorn populations to recover from initial infections.