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One of Utah's fall traditions — the Antelope Island Bison Roundup — wraps up today.

The 28th annual roundup started Friday as approximately 250 registered horseback riders began pushing an estimated 700 bison, also known as buffalo, to the corrals.

Riders will round up some stragglers today, herding the animals into corrals on the west side of the island. The Bison will be screened for health issues and then kept in the corrals.

Antelope Island State Park wildlife biologist Steve Bates decides after all the animals are gathered how many the state will make available to purchase through an annual auction. Typically, around 200 bison are auctioned, the main way the herd size is controlled on the 28,000-acre island. The population objective for bison on Antelope Island is about 500. Money raised from the auction is used to pay for habitat projects on the island that benefit all wildlife.

The 10th annual Bison Auction on Antelope Island is being held Nov. 8 at the bison corrals.

— Brett Prettyman

Twitter: @BrettPrettyman —

See what the roundup looks like from horseback here: and read about the ride here: