Wildlife officials are modifying and moving fences and better tracking the movements of pronghorn antelope.
The Arizona Daily Sun reports the animals tend not to jump fences. Nonprofit organizations and state and federal agencies are committed to removing or modifying these fences in the long term after spending years on a pilot program and tracking pronghorn.
Game and Fish will track about 70 of the animals to gauge how effective the efforts are.
There are thousands of pronghorn north of the San Francisco Peaks, a population reduced from millions after development, roads and livestock fencing cut off migration routes and limited habitat.
Arizona Game and Fish Department research biologist Jeff Gagnon says pronghorn migration allows animals to find food and water, escape predators and weather, and diversify breeding populations.