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  2. Bird scarer - Wikipedia

    en.wikipedia.org/wiki/Bird_scarer

    Ultrasonic devices are static sound-emitting bird deterrents, which, in theory, will annoy birds to keep them away from enclosed or semi-enclosed areas. Ultrasonic scarers are not harmful to birds, however, there is debate around birds' ability to hear these frequencies at loud enough decibels.

  3. Acoustic harassment device - Wikipedia

    en.wikipedia.org/wiki/Acoustic_harassment_device

    Acoustic harassment and acoustic deterrents are technologies used to keep animals [1] and in some cases humans away from an area. Applications of the technology are used to keep marine mammals away from aquaculture facilities and to keep birds away from certain areas (for instance in the vicinity of airports and blueberry fields).

  4. Garden owl - Wikipedia

    en.wikipedia.org/wiki/Garden_owl

    There are many manufactures of Garden Owls. [4] A swiveling head [5] and wind-powered wings [6] are features that are often used to mimic a living owls behavior, and increase the garden owl's ability to deter pests. Many technological updates to the garden owl have been made including solar motors, [7] motion sensors, [8] and hidden cameras. [9]

  5. Bird control - Wikipedia

    en.wikipedia.org/wiki/Bird_control

    Bird control devices fall under two categories: deterrents and exclusions. [4] Deterrent devices, such as sonic units and bird spikes, discourage birds from landing or roosting in an area by presenting a physical obstacle or causing discomfort and annoyance for the target bird.

  6. Shishi-odoshi - Wikipedia

    en.wikipedia.org/wiki/Shishi-odoshi

    A shishi-odoshi breaks the quietness of a Japanese garden with the sound of a bamboo rocker arm hitting a rock.. Shishi-odoshi (literally, "deer-frightening" or "boar-frightening"), in a wide sense, refers to Japanese devices made to frighten away animals that pose a threat to agriculture, including kakashi (), naruko (clappers) and sōzu.

  7. Fort Worth airports use sirens and pyrotechnics to scare ...

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  8. How to stop cats killing birds and keep the peace in your ...

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    12 Pack Scat Mats | Amazon. These mats provide a deterrent without hurting your pets. You can place them underneath a bird feeder to stop your cat getting close enough to cause chaos.

  9. Alarm signal - Wikipedia

    en.wikipedia.org/wiki/Alarm_signal

    Many primates and birds have elaborate alarm calls for warning conspecifics of approaching predators. For example, the alarm call of the blackbird is a familiar sound in many gardens. Other animals, like fish and insects, may use non-auditory signals, such as chemical messages.

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