Seeing a flock of birds on a transmission line can be an amazing sight, and although birds can perch safely on electrical wires, colliding with them can cause injury or death. When power lines are near lakes and ponds, the risk of collision increases. This is the case of the birds of Lake Watson in Prescott, Ariz.
In January, a five-man Desert Southwest maintenance crew, led by Foreman II Lineman Ronnie Martinez, installed line-marking devices, or LMDs, on Western’s Prescott-to-Pinnacle Peak 230-kilovolt line. “This is the first time DSW Maintenance crews took on a project like this so it was a good experience for all involved,” said Line Crew Foreman III Mark DePoe.
DSW installed the LMDs because residents of Lake Watson were worried that the birds using the lake were colliding with the overhead ground wires, and asked Western to help. Although there was no evidence of bird collisions near the lines, DSW’s Environmental group decided to install the devices. “Our power lines run east and west in that area and pass just southwest of the lake. Although we haven’t seen bird causalities in the area, we agreed to install the LMDs before anything hap-pened. We pride ourselves on being good neighbors and environmental stewards,” explained DePoe.
Before installation, the line was de-energized, and crew members thoroughly inspected the overhead ground wires for damage as a safety precaution. ἀe devices are staggered 50 feet apart on each of the overhead ground wires.
DSW installed LMDs that clamp onto overhead ground wires. They are made of light plastic and reflective tape so they can easily swivel in the wind, and since they are not stationary, they are more likely visible to birds. “The birds will see [the devices] and not collide with the overhead ground wires,” said DePoe.
Although Lake Watson residents have not experienced an outage from bird collisions on the Prescott-to-Pinnacle Peak line, animals are one of the main causes of power outages in Western’s territory. Biologist Misti Schriner shared, “Western is actively involved in Avian Power Line Interaction Committee efforts to under-stand and educate the utility industry and conservation groups about the nature of power lines and birds.”
Western’s proactive approach to the situation, coupled with the collaborative effort between Maintenance, Environment and the community, created a win-win situation for everyone.