this post was submitted on 28 Jun 2026
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Info from the original source, which I think was this facebook post:
In Japan, large solar power farms face an unusual challenge from crows, highly intelligent birds that have taken to dropping stones and other debris onto the photovoltaic panels.
Although the impacts rarely shatter the glass immediately, the accumulated objects create hotspots by blocking airflow and sunlight, leading to gradual overheating, reduced efficiency, and potential long-term damage to the expensive infrastructure critical for renewable energy production.
Experts speculate that this behavior might stem from curiosity, playfulness, or crows treating the shiny, flat surfaces as novel platforms for their habitual object-dropping antics—similar to how they crack nuts by dropping them from heights onto roads.
Conventional deterrents like netting, reflective tapes, or noise devices often prove ineffective against such adaptable and persistent corvids.
The most reliable solution has proven to be falconry: professional falconers deploy trained raptors, typically hawks or falcons, to patrol the sites.
The mere presence and aerial pursuits of these natural predators trigger an instinctive fear response in crows, prompting them to vacate the area entirely rather than risk confrontation.
Remarkably, a single well-trained falcon can conduct around 60 rapid attack sorties daily, establishing dominance over a vast territory and safeguarding up to 100,000 solar panels from further interference.
This eco-friendly, non-lethal method revives traditional falconry practices to protect modern green technology, balancing wildlife behavior with sustainable energy needs.