BOISE, Idaho (AP) — Although wolves killed fewer livestock overall in Idaho this year, the Cascade area defied the trend.

The Capital Press reports that Idaho Wildlife Services investigated 91 wolf livestock killings during fiscal year 2015, down from 107 the year before and 129 in 2013.

But Wildlife Services Director Todd Grimm says the Cascade area was an exception to the trend. He says the wolves there killed nine cattle this summer, including seven owned by rancher Phil Davis. They didn't bother to feed on the carcasses of Davis' cattle.

Grimm plans to use a helicopter to put radio collars on the wolves there as soon as there's a blue sky and snow, allowing them to track foot prints

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