When people think of substations, they probably picture cold, impersonal transformers and a tangled web of wires. But to birds, this place is practically a paradise with no natural predators to bother them. As a result, magpies and crows flock here—some to make their homes, others to use the area as a makeshift restroom. For power grid workers, however, this poses a heart-stopping hazard: birds use wires and twigs to build their nests, and if any of these materials fall onto live parts, it’s a “bang”—a short circuit that trips the circuit breaker. Even if that doesn’t happen, a buildup of corrosive bird droppings can easily cause equipment to suddenly shut down.
To deter birds, Zhenqu Bird Repeller has introduced the Combined Sound and Light Bird Repeller (ZQN-DZ-CS). Don’t let its small size fool you—it’s quite powerful.
First, it emits high-frequency ultrasonic waves. These sounds are inaudible to the human ear, but to birds, they sound like someone is constantly making a piercing noise right next to their ears, which disturbs them so much that they have no desire to linger in the area. It’s just like how we can’t stand being in a noisy room that’s under renovation.
Sound alone isn’t enough—what if a bird happens to be “hard of hearing”? Don’t worry—there’s a second tactic: laser patrol. The device emits a series of moving green laser beams that sweep back and forth across every corner of the substation, instantly creating an overwhelming visual presence. The cleverest part is that both the frequency and angle of these beams vary randomly, making it nearly impossible for birds to detect a pattern and adapt.
In the early years, to control bird infestations, power company workers came up with all sorts of creative solutions. Some tied colorful little flags to the poles, others hung shiny CDs, and they even installed fake eagles that would just squawk wildly. These methods were indeed effective for the first few days, but over time, the birds caught on. Some daring magpies even went so far as to build their nests right on top of the fake eagles—a situation that was truly both amusing and exasperating. Today’s sound-and-light bird repellents, however, are most effective because of their “frequency modulation,” which leaves the birds no chance to adapt.
