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Grand Teton NP aims to get rid of non-native mountain goats, which now out-number native bighorns

Invasive mountain goats now outnumber the isolated and increasingly vulnerable herd of native bighorn sheep in the Teton Range — and wildlife managers want to do something about it.

Wyoming Game and Fish Department biologist Aly Courtemanch discovered the new majority via aerial survey this winter, counting 88 non-native mountain goats and 81 native bighorns. The growing number of interlopers is spurring wildlife managers to consider lethal action.

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