It's a windy morning in early June, and Colorado State University researcher Jennifer Barfield is peering anxiously at a herd of bison. One is trying, really hard, to have a baby. Its her first birth, and the mama bison keeps laying down, then standing up, trying to get the calf out of her body.
Barfield takes another look at the mama, who is penned in with a small herd of other bison at the CSU Foothills Campus.
"The feet of the baby are sticking out about 3-4 inches, and she's pushing which is a good sign," she notes. Barfield's normally-smiling face is furrowed with anxiety though; the birth, which usually takes less than an hour, is moving too slowly. Today, she knows, is more than just a birth. It's the culmination of years of work.