Another two adult wolves will be killed in Wallowa County in a pack where two adult wolves were killed last week, Oregon wildlife officials said Wednesday.

A lethal livestock attack, on what is believed to have been a calf, prompted the planned wolf kill, said Michelle Dennehy, Oregon Fish and Wildlife spokeswoman. Last week, the agency removed two non-breeding members of the Harl Butte wolf pack.

In March, state biologists counted seven wolves in the Harl Butte pack, and in December the pack had an estimated 10 animals. After last week's kills and the next, there will be six adult wolves, Dennehy said, noting that the size of a wolf pack often varies.

Before Wednesday's announcement, state officials had said they'd documented wolf attacks on seven cattle in the past 13 months, including three cattle kills.

In 2015, Oregon removed wolves from the state's Endangered Species list, but the animals remain on the federal list and are protected in Western Oregon and areas west of Highways 395, 78 and 95. In Northeast Oregon the animals are managed under the state's wolf plan, and lethal action can be approved if animals are observed repeatedly killing cattle or other livestock.

-- Allan Brettman