為了保護大提頓國家公園內瀕危的大角羊，國家公園管理局以空中射擊撲殺入侵物種雪羊。 當區雪羊是為了狩獵活動而野放的，於1960 及1970 年代遷移到大提頓國家公園，並為野生動物的食物資源增添壓力。 大角羊受到狩獵活動及畜牧的傳染病所威脅，現時大提頓國家公園只餘下大約 125 隻大角羊。
To protect the endangered bighorn sheep in Grand Teton National Park, National Park Service is culling invasive mountain goats by aerial gunning. Mountain goats were releases for hunting activities and introduced to the area in the 1960s and 1970s, and increased pressure on limited food sources. bighorn sheeps are treated by hunting activities and diseases from domestic sheep. There are only around 125 left in the Teton Range.