PORTLAND, Ore. (AP) -- Oregon's largest wolf pack has moved deep into the state and into Washington.
The Oregonian http://bit.ly/oGrTyt ) reports that tracking by the Oregon Department of Fish and Wildlife indicates four wolves in the Imnaha pack.
Oregon wildlife biologists last spring killed two wolves in the pack after ranchers' calves were attacked. A third wolf died after being captured and collared.
The department says it will kill two more of the pack after the alpha male's GPS collar confirmed it was at the scene of a calf kill last week.
The department's assistant wolf coordinator, Roblyn Brown, says fluctuation of wolf numbers and movement is normal.
The overall number of wolves in the state fell from 21 to 12. The number is expected to climb.
Copyright 2011 The AP.