BEND, Ore. (AP) -- Oregon's state wolf coordinator has warned Bend-area ranchers to prepare for a rapid expansion of the state's wolf population.

The wolves make their way into the state from Idaho. They were eradicated in Oregon in the 1940s.

At a panel on Friday, Eastern Oregon ranchers long familiar with wolf predation on cattle complained that they are prohibited from killing wolves and say nonlethal prevention measures are ineffective.

Wolves are listed as an endangered species by the state throughout Oregon and are also federally listed as endangered in the western two thirds of the state.

Two wolves have already trekked through Central Oregon. One of them, OR-7, became the state's most famous canine while his movements were tracked via a GPS-enabled collar.

OR-7 was in Northern California earlier this week.

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