You'll have a chance this weekend to check a rare piece of Iowa wildlife.The Neal Smith Wildlife Refuge in Jasper County is hosting "Bison Day" this Saturday.It's an opportunity for people to learn about the roaming animals and learn about their tall grass prairie heritage.The Refuge has a herd of about 70 bison, including some new arrivals."We have 12 baby bison," said Hayley Lindsey, park ranger. "We had a recent one born two weeks ago. So a lot of them they are so little you can't see them in the tall grass, but they are pretty neat to see. But that is an average number for us each season."There are plenty of activities for all ages, including making a bison charm, bison coloring pages and a bison trivia walk.It runs Saturday from 10 a.m. until 2 p.m. Click below to watch more news from KCCI: