This Sept. 13, 2004 file photo shows wildlife Biologist Linda Thurston of Defenders of Wildlife untangling a string of fladry, a non-lethal system for protecting livestock from wolves,

 

              This Sept. 13, 2004 file photo shows wildlife Biologist Linda Thurston of Defenders of Wildlife untangling a string of fladry, a non-lethal system for protecting livestock from wolves,
This Sept. 13, 2004 file photo shows wildlife Biologist Linda Thurston of Defenders of Wildlife untangling a string of fladry, a non-lethal system for protecting livestock from wolves, on a ranch in the Paradise Valley, Mont. Research shows the flags, often backed up by an electriclaly charged wire, somehow make wolves less likely to cross the line, offering protection for livestock that are bunched up at calving time. For the past year, ranchers in Oregon have had to rely on non-lethal systems like fladry, because a temporary court order has barred wildlife officials from killing wolves that attack livestock. Though the numbers of wolves has risen to 46, the numbers of livetock attacks are down. (AP Photo By Garrett Cheen/The Livingston Enterprise)
Tags: Oregon , cross