CHIPPEWA FALLS, WI (WTAQ) - Officials at the Chippewa Falls zoo are trying to figure out why two bison died in the past week.
Six remaining bison -- including three adults -- have been moved to a small pasture area within the Irvine Park Zoo, and they've been given antibiotics.
At last word, city park director Dick Hebert said one of the survivors was showing signs of distress.
The two bison that died were about five-years-old. One died last Friday, and the other the following day.
Hebert says an area veterinary clinic is examining the animals. Test results are expected from a lab by the end of the week.