STORM LAKE, Iowa (AP) — Authorities say high winds caused a trailer full of turkeys to overturn on the side of a highway in northwest Iowa. The Sac County Sheriff’s Office says 760 turkeys were in the trailer when it was blown over Sunday night on Highway 20.

A semitrailer helping to carry the turkeys was headed to a processing plant in Storm Lake when the driver pulled over due to a mechanical malfunction. The trailer was unhooked from the power unit and dollied. The accident happened as the trailer was dollied.

Officials say 70 percent of the birds died. Emergency responders cut holes in the trailer to help remove turkeys that were dead and alive.