Oh come on, that’s the most unimaginative answer ever. If google is correct, prairiedogs don’t even live in the Sonoran desert.
One of my favorite exhibits of all time was the Harris antelope squirrel exhibit at Skansen. A very active group of ground dwelling rodents, even with underground sights. The least Burgers could do is get one of the two ground rodents that do live in the Sonoran desert.
But there are so many options. How about levelling out the exhibit a bit and moving the peccaries into that area. Then moving some or one of the rodents out of the underground into that exhibit.
Or levelling out a part of the bighorn sheep exhibit and creating two or three smaller exhibits for jackrabbit or cottontail. Or adding a small children’s playground or “rocky” slide for kids. You could even create one larger exhibit for the bobcat there and get a fox species for the bobcat exhibit. Or even one or two smaller, “canyon like” aviaries.
Or the easiest, levelling it out a little, remove the walls and just add it to the rest of the desert and adding more (ground dwelling or not) birds.
I had hoped that with the removal of the pygmy hippo, red duiker, blue duiker, bongo, lowland tapir and warthogs, the mammal collection had dulled down enough

now we are replacing the iconic (for Burgers at least) bighorn sheep with another of the most common and unthreatened species in zoos today. I’m baffled and frankly, a bit annoyed.