In 2003, experiments showed wolves refuse to cross a line of fluttering flags, so ranchers now string 'fladry' around calving pens as a cheap, non-lethal way to keep the predators off herds

Fladry, a rope with flags, deters wolves from pastures. Research shows this visual cue makes wolves wary of crossing fences. Studies indicate fladry provides weeks to months of protection for vulnerable livestock. Electrified fladry, or turbo-fladry, offers enhanced effectiveness against wolves. This method buys ranchers valuable time to safeguard their herds.