Besides vision, birds use their acute hearing to alert them to danger or iminent threats. Their hearing is most sensitive in the range from 1 kHz to 4 kHz—sounds easily detected by humans as well. While some birds can hear sounds outside this range, no species of bird can detect ultrasonic frequencies—those greater than 20 kHz. Pigeons, for example, are most sensitive to sounds between 1 kHz and 2 kHz, with an upper limit of about 10 kHz.
To be effective, scientists have determined that a sonic bird deterrent must be detectable, audible and relevant. Studies reveal that birds show no behavioral or neurophysiological responses to ultrasonic frequencies, and that ultrasonic devices have no effect on dispersing or repelling birds. On the other hand, biologically relevant sounds within a bird's hearing range do have an effect. These sounds--made by members of the same species, other bird species, or predators—can successfully disperse or repel birds.
A bird's ability to hear sound is dependant on the frequency of that sound. Birds are typically less sensitive to a specific frequency than humans. So you may be able to hear a faint sound, while a bird near you may not be able to hear it. To overcome this problem, one must generate a louder sound, move the sound closer to the bird, or use directional speakers to focus the sound more directly at the bird.
Birds Can Hear and React to Sonic Bird Deterrents
Unlike ultrasonic devices, Sonic Bird deterrents can keep birds away. That's because these proven effective deterrents generate distress and predator calls that are detectable, audible and relevant. Pest birds hear them and they leave, convinced that danger is near. One commercially available system can generate distress and predator calls for as many as 22 different types of birds. So if you're not sure about the species of bird that is causing the problem, a sonic deterrent like this would be ideal.
One popular sonic deterrent repeats bird calls every 10 minutes. Better still, the calls resemble natural birdcalls. So they won't annoy or irritate your pets, neighbors, family or guests. The best sonic deterrents are easily programmed to turn on or off at night. They include a volume control and a built-in speaker that covers up to an acre. If you're evaluating sonic deterrents, don't forget to look at rugged outdoor construction. After all, you want the device to last through hot summers and rainy winters.
For Best Results, Mix Sonics with Other Bird Deterrents
Sonic bird deterrents should be combined with other bird control measures to achieve the best results. These include visual deterrents like flash tape, banners and balloons covered with threatening predator eyes. Or you can install highly effective bird spikes, which come in various sizes and types—including stainless steel and economical plastic (which comes in a variety of colors).
For additional advice on how to properly choose sonic bird deterrents, consult an expert like the folks at Bird-B-Gone.
To be effective, scientists have determined that a sonic bird deterrent must be detectable, audible and relevant. Studies reveal that birds show no behavioral or neurophysiological responses to ultrasonic frequencies, and that ultrasonic devices have no effect on dispersing or repelling birds. On the other hand, biologically relevant sounds within a bird's hearing range do have an effect. These sounds--made by members of the same species, other bird species, or predators—can successfully disperse or repel birds.
A bird's ability to hear sound is dependant on the frequency of that sound. Birds are typically less sensitive to a specific frequency than humans. So you may be able to hear a faint sound, while a bird near you may not be able to hear it. To overcome this problem, one must generate a louder sound, move the sound closer to the bird, or use directional speakers to focus the sound more directly at the bird.
Birds Can Hear and React to Sonic Bird Deterrents
Unlike ultrasonic devices, Sonic Bird deterrents can keep birds away. That's because these proven effective deterrents generate distress and predator calls that are detectable, audible and relevant. Pest birds hear them and they leave, convinced that danger is near. One commercially available system can generate distress and predator calls for as many as 22 different types of birds. So if you're not sure about the species of bird that is causing the problem, a sonic deterrent like this would be ideal.
One popular sonic deterrent repeats bird calls every 10 minutes. Better still, the calls resemble natural birdcalls. So they won't annoy or irritate your pets, neighbors, family or guests. The best sonic deterrents are easily programmed to turn on or off at night. They include a volume control and a built-in speaker that covers up to an acre. If you're evaluating sonic deterrents, don't forget to look at rugged outdoor construction. After all, you want the device to last through hot summers and rainy winters.
For Best Results, Mix Sonics with Other Bird Deterrents
Sonic bird deterrents should be combined with other bird control measures to achieve the best results. These include visual deterrents like flash tape, banners and balloons covered with threatening predator eyes. Or you can install highly effective bird spikes, which come in various sizes and types—including stainless steel and economical plastic (which comes in a variety of colors).
For additional advice on how to properly choose sonic bird deterrents, consult an expert like the folks at Bird-B-Gone.
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