Technologies, Electronics
Bird scares: the principle of action, description and reviews
For some gardeners and landowners, birds have become real pests. Floating in packs, they steal some of the grain stocks and crops. But urban residents can also suffer from neighborhood with some birds. For example, chirping twitter under a window in the early morning or "bombarding" parking lots can become unbearable for a person.
Ways to combat penguin
The most humane and appropriate way to combat this problem is to scare away the feathered. Today, the market offers a variety of devices that are designed specifically for this purpose. It can be noted that there is no universal device, and what the gulls react to, crows may not be afraid. Therefore, the birds' deterrents differ from each other in the principle of operation and area of impact. The main types of devices and their features are described below.
Ultrasonic repeller
Disadvantages of ultrasonic devices
But these kind of bird scarers have their shortcomings. Specificity of ultrasound allows to cover a small area. Usually its protection extends to 600 square meters. Meters. If this is a very inexpensive device, the area it protects barely reaches 100 square meters. Meters. Therefore, ultrasonic bird repeller is suitable for use on small garden plots, kitchen gardens, hangars, garages.
It is also important to consider the location of its installation, because ultrasound is not able to penetrate through partitions, walls and glass. When this sound reaches an obstacle, it is reflected from it, so the device "works out" only open spaces.
Modified ultrasonic devices
Some ultrasound bird offenders have an increased impact on "uninvited guests." They are equipped with light devices and motion sensors (to save energy). Together, light and ultrasound at short distances have the maximum efficiency. But such devices are better to acquire if people or vehicles do not often pass through the zone of action. Although some devices have the ability to configure against false triggering or the ability to disable this function at certain times.
Bioacoustic scarers
This kind of instrument imitates the sounds of birds, warning of danger or screams of birds of prey. These devices cover the territory much more than the ultrasonic analogs, since it is possible to simultaneously switch on several radiators. Also, the sound repeller of birds has a solid construction, which allows you to apply under various weather conditions.
The drawbacks are that these devices are narrowly focused, that is, they scare away only a certain species of birds. Other groups of birds may not react at all to these sounds. But if you find a good manufacturer, you can order an individual device from those "pests" that prevail in your area.
Laser repellers
This type of devices is mainly used in large enterprises, for example, at airports. Their work requires constant human participation, but of all these are the most effective scavengers of birds. The bird perceives as a threat to life a bright fast moving beam. Laser handheld devices are expensive and are considered professional.
There are fixed installations, and they are used in an autonomous mode. But in the daytime they are indiscriminate and ineffective. Such devices are suitable for those places where ultrasonic scarers are not able to cover the territory, and the use of bioacoustic devices is unacceptable.
Propane guns
These devices scare away all birds and animals with the sound of a noisy shot. The gun fires at the set time and operates from the propane balloon. Although there is no need for an installation, but a cylinder replacement is required from time to time. Shots are very noisy, so these scarers are used mainly in fields and other farming plantations.
Complex repellers
Universal types of devices to repel birds usually combine in their device several of the characteristics listed above. It is often possible to see a device that, in addition to ultrasound, includes bioacoustics. Producers argue that the dignity of these scarers is a high probability that birds will not be inhabited near your site if they do not succumb to fear of sound vibrations, perhaps they are affected by the cry of foreign birds. But such devices, as a rule, have large dimensions, considerable energy consumption and low efficiency. In addition, the cost of upgraded devices is much higher than that of narrowly-directed repellers.
Popular scarers
Having considered the main categories of devices for scaring birds, one can assume which type of device is most relevant in your situation. So, among the ultrasonic devices there is a bird repeller "WK-0020". Waves that send this device, do not catch pets, and while they hear such birds as starlings, crows, pigeons, sparrows. The device can be installed on the balcony, attic, near the garage, in a small utility room. To work, he needs two batteries (finger).
Bird scare: reviews of people
Some owners also recommend that you carefully approach the choice of ultrasound devices, because they have learned from their experience that brave pigeons not only do not fear these sounds, but, conversely, fly to them and try to sit down to them as close as possible.
If you decide to buy a bird repeller, try to be more careful in choosing it and more accurately find out which birds it is on. Also, do not believe the promises of advertising, since most devices are not able to drive away all kinds of birds.
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