"It's part of the old west,” said Gary Grubb, a photographer trying to catch a glimpse of the riders. “Just a real treat for modern day,” he said.
This year the bison are on the west side of the island. The rougher terrain makes it difficult not only for the riders trying to herd them, but also onlookers trying to catch a glimpse of it all.
“The kids enjoy it, we thought we could see their dads that would be fun but they love to see the buffalo,” said Natalie Mabey, wife of a rider.
The roundup is expected to wrap up by nightfall, but it could take until Saturday if the buffalo don't cooperate. Once all are rounded up they'll get their health checks, but not all will be released back.
"They release back about 500,” said Lyle Clayton, a park volunteer. “Winter grazing only holds about 500 of them and they auction the rest off. That's how they control the size of the herd,” he said.
If you missed the roundup you can always come to the bison corrals next weekend when the buffalo will be inspected for the winter.