Since the 1990s, elk that migrate between Yellowstone National Park and Cody have been raising fewer calves. But the elk that stay in the foothills near Cody year round and don’t migrate have been doing very well. A new study looks at why that’s the case. Wyoming Public Radio’s Willow Belden spoke with the lead author on the report, Arthur Middleton. He says they spent years looking at the elk’s predators and habitat, and how those corresponded to elk pregnancies and overall wellbeing.