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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. Exclusion devices are 100% effective when installed correctly, as they entirely prevent birds from physically entering the treated area.
Bird scarers is a blanket term used to describe devices designed for deterring birds by startling, confusing or otherwise repeling them, typically employed in commercial settings by farmers to dissuade birds from consuming and defecating on recently planted arable crops. Numerous bird scarers are also readily available to the public direct to ...
Small mammals and some birds can be excluded with netting, tarp, hardware cloth or any other suitable material; nets come in different weave sizes suitable for different animals to be excluded. However, exclusion techniques can interfere with the natural movement of wildlife, particularly when exclusion covers large areas of land.
A bird control spike, also known as an anti-roosting spike, [1] pigeon spike, or roost modification, is a device consisting of long, needle-like rods used for bird control. Bird control spikes can be attached to building ledges, street lighting , and commercial signage to prevent wild or feral birds from perching or roosting.
Bird netting or anti-bird netting is a form of bird pest control. It is a net used to prevent birds from reaching certain areas. Bird protection netting comes in a variety of shapes and forms, The most common is a small mesh (1 or 2 cm squares) either extruded and bi-oriented polypropylene or woven polyethylene.
The devices have also been employed to keep marine mammals away from fishing nets. [2] The devices are known as acoustic harassment devices (AHDs) and acoustic deterrent devices, which are smaller AHDs [3] or intended as an awareness tool to warn species to the presence of danger rather than as a tool of harassment at a much louder level. [4]