TOKYO, May 6 — Crows are often disliked for the damage they cause in the countryside, as well as in the city. In Tokyo in particular, these birds cause a great deal of damage,...
Be accountable for your actions at work so you don’t have to suffer anymore from wastage, Anwar tells civil servants after announcing record raise TOKYO , May 6 — Crows are often disliked for the damage they cause in the countryside, as well as in the city. In Tokyo in particular, these birds cause a great deal of damage, attacking the city’s garbage bags. This has prompted one of the Japanese capital’s city councils to tackle the problem in an unusual way.
The municipality of Adachi has decided to install crow-deterrent loudspeakers to dissuade these birds from attacking the garbage of the 700,000 or so residents who live there. In Japan, residents don’t put their garbage in large plastic trash cans, as in many other countries. Instead, they place their waste-filled bags under a sort of protective net, before the garbage collectors pass by.
But the loudspeakers are a powerful deterrent. These small devices broadcast recordings of crows’ cawing noises. Equipped with infrared detectors, they can switch on as soon as a crow gets too close to a pile of garbage. The bird, frightened by the cries of its fellow creatures, flees in haste, without damaging the garbage bags, as seen inThis surprising invention comes straight from the laboratories of CrowLab, a specialist company based in Utsunomiya City, Tochigi Prefecture.
These are the vocalisations broadcast by the loudspeakers purchased by Adachi city hall. The municipality tested their effectiveness between June and September 2023, and found that, during this period, garbage destruction dropped considerably near some of the city’s waste collection points, reports Japan Today.Surprisingly, the equipment is said to have a positive effect on humans too.
It remains to be seen whether other Tokyo municipalities will equip themselves with these loudspeakers. The Japanese capital has been waging war on crows since the early 2000s. In 20 years, some 243,000 birds have been captured and neutralised in the capital, according to, citing figures from the Tokyo Metropolitan Government.
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