The World Leaders in the Safe & Humane Dispersal of Birds... Scarecrow Bio Acoustic Systems Limited has been producing bird dispersal systems of the highest technical standard for airfields and surrounding areas since 1990. The broadcast of distress calls, as part of an Integrated Bird Management Scheme, has proved effective for bird dispersal, an essential part of flight safety. Scarecrow bird ...dispersal products, representing state of the art technology to fully meet the challenging task of Bird Strike Avoidance, are approved and used by major civil airports and in military aviation throughout the world. The Scarecrow product range is suitable for all types of bird problems. We have supplied fixed, automatic bird dispersal systems for marinas, landfill sites, waste transfer stations, off shore oil and gas platforms, offices, warehouses, sports stadia...the list is endless!