Green 1000mv laser pointer is a very effective tool for birds(and goose) dispersal
As the demand for non-lethal, environmentally safe methods of bird scaring has increased, interest has grown in the use of lasers, particularly low-power lasers that work under low light conditions. The low power levels, accuracy over distance, silence and the ability to direct them on specific problem birds, makes laser devices an attractive alternative to other avian scaring devices. Birds are startled by the strong contrast between the ambient light and the 1000mw laser pointer beam. During low light conditions this technique is very selective, but at night the light beam is visible over a large distance and hence can cause non-selective disturbance. Unpublished data from trials on French airfields indicate that these devices are ineffective in bright daylight conditions, and the device worked best when shone in birds’ eyes. Results of pilot trials undertaken on UK cormorants and goosanders support this effect (McKay et al. 1999).
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Laser pointers play a big role in repelling birds?
Lasers have been tested in a number of countries. In France, a 3000mw laser pointer gun was used to disturb cormorants from a night roost (Troilliet pers. comm., cited in Boudewijn and Dirksen 1996). During cloudy weather the method worked well, with most of the birds scared away within 20 minutes, and treatment over consecutive evenings caused the temporary desertion of the roost. Cormorants appeared to be particularly sensitive to laser light. Similar results were obtained at a cormorant night-roost in the region of the Dombes, France. After using a laser gun for two nights, the night-roost was deserted for a week (Broyer 1995, cited in Boudewijn and Dirksen 1996).
Successful results were also achieved in America using the laser gun ‘Avian Dissuader’, costing US$900. The laser treatment cleared roosting crows from the Capitol complex within an hour (State Capitol Bureau 2001). The long-term success is not reported.
2022-02-11 10:17:24
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