Gray wolves established four new packs and expanded their territory in the state over the past year, state wildlife managers told the Washington Fish and Wildlife Commission at a public meeting recently.
That assessment was based on an annual survey by the Washington Department of Fish and Wildlife (WDFW) that confirmed the presence of 13 wolf packs, five successful breeding pairs and at least 52 individual wolves in 2013.
Donny Martorello, WDFW carnivore specialist, said the latest findings point to continued growth in the state’s wolf population under state and federal recovery plans.
“While we can’t count every wolf in the state, the formation of four new packs is clear evidence of steady growth in Washington’s wolf population,” he said. “More packs mean more breeding females, which produce more pups.”
All but eliminated from western states in the last century, wolves are now protected under Washington law throughout the state and under federal law in the western two-thirds of the state.
The commission, an ap-pointed panel that sets policy for WDFW, approved the plan in 2011 that guides state management and recovery of wolves in Washington.
In developing its annual update, WDFW used a combination of aerial surveys, trackers and signals from 11 wolves fitted with radio collars, Martorello said.
Three of the new packs – Ruby Creek, Dirty Shirt and Carpenter Ridge – were formed by wolves that split off from the existing Smackout Pack in northeast Washington, he said.
A fourth new pack, the Wenatchee Pack, appears to be made up of two female wolves from the Teanaway Pack, whose territory stretches between Ellensburg and Wenatchee.
Under the state’s wolf conservation and management plan, a wolf pack is defined as two or more wolves traveling together.
Despite their growing numbers, wolves were involved in far fewer conflicts with humans and livestock in 2013 than in the previous year, Martorello said.
Stephanie Simek, WDFW’s wolf conflict-resolution manager, said the department investigated 20 reported attacks on pets and livestock last year, but found that wolves were actually involved in only four of them.
By comparison, wolves killed at least seven calves and one sheep in 2012, leaving six additional calves and two sheep injured.
WDFW ultimately killed seven members of the Wedge Pack to stop the escalating series of attacks, although two wolves were still travelling as a pack in the same area in 2013.
“That was an extraordinary event that we do not want to repeat,” said Martorello, noting that no wolves were killed by WDFW last year.
The 2013 survey does, however, reflect the death of five wolves, due to causes ranging from a car accident on Blewett Pass to a legal hunt on the Spokane Indian Reservation.
Under the state’s wolf-management plan, wolves can be removed from the state’s endangered species list once 15 successful breeding pairs are documented for three consecutive years among three designated wolf-recovery regions – or 18 successful breeding pairs in one year among three designated wolf-recovery regions.
In 2013, WDFW documented three successful breeding pairs in the Eastern Washington recovery region and two pairs in the North Cascades recovery region. No wolf packs or breeding pairs have been documented on the South Cascades/Northwest Coast recovery region.
Meanwhile, the federal listing of gray wolves under the Endangered Species Act is currently under review. In June 2013, the U.S. Fish and Wildlife Service announced a proposal to delist gray wolves nationwide.