Recently, there are two types of digital bird repeller in the market, including bird repeller windmill and ultrasonic digital bird repeller. However, bird repeller windmill has many problems, for example, it is easy to become ageing and destroyed by nature, its life is short and it can not be used if there is no wind. So, now, this product has been out of use..
Ultrasonic digital bird repeller, due to the limitation of coverage, is slow to come into effect, so it is generally used in power station, not very useful in farmlands and gardens. The foreign digital bird repeller has a high cost and it is always not useful due to changing the living conditions.（Comparison between Different Types of Bird Repeller）。

With many years’ efforts, Beijing Academy of Agriculture and Forestry Sciences and NERCITA has studied many different types of birds in different places in China and collected many sounds of birds’ enemies. After sounds processing and learning from the advanced technologies in the world, a digital bird repeller designed for China has been developed. 。

In 2006, CCTV interviewed the digital birds repeller developed by NERCITA.（Click here to watch the program on-line）. Until recently, it has been used in farmland for many times, and the second-generation “LvYuan”” intelligent bird repeller has been pushed into the market.

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