JACKSON, Wyo. (AP) — Groups of hunters report success killing nonnative mountain goats in western Wyoming's Grand Teton National Park.

They killed 16 goats during the first three weeks of a nine-week effort to eradicate the 100 or so goats using shooters from the ground.

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A previous effort last winter to shoot mountain goats from a helicopter was called off after a few days, when Gov. Mark Gordon and other Wyoming officials objected to the aerial gunning.

The Jackson Hole News & Guide reports park officials want to eradicate the nonnative mountain goats because they compete with bighorn sheep for habitat and can spread diseases to the native sheep.