< Topic >Being the device which prevents the damage to the farm products and the fruit tree by Aves such as crow, sparrow, bulbul and pigeon, receiving the natural wind, it offers kazaguruma which does not have the fact that it declines the precaution of Aves such as crow it turns not only, by always moving irregularly over the long period of time.SolutionsUsing body of revolution 1 of kazaguruma, adhesion the photograph of the predatory birds and the multiple aluminum foil below thickness 0.1mm such as falcon, hawk and washi relatively on the level aspect of the surface body of revolution and 2 aspects which form the curved surface, because the rotary center O and the distance which outermost of kazaguruma itself lap ties dot A, B and C dot (20 - 50) makes the size which becomes cm range, the feather quantity limiting to 2 or 3, in the atmosphere is installed, in order to obtain the endurance for the strength due to weather resistance and wind blast the feather componentThickness (0.3 - 1.0) is designated as mm.< Choice figure >Drawing 1【課題】カラス、スズメ、ヒヨドリ、ハト等の鳥類による農作物、果樹への被害を防止する装置であって、自然の風を受けて回転するだけでなく、常に不規則な動きをすることにより長期間に渡ってもカラス等の鳥類の警戒心を減退させることのないカザグルマを提供する。【解決手段】カザグルマの回転体1を使用して、回転体の表面の比較的平らな面及び曲面を形成する2面にハヤブサ、タカ、ワシ等、猛禽類の写真や厚さ0.1mm以下の複数のアルミ箔を接着し、その回転中心Oとカザグルマ本体の最外周の点A,B及びC点を結ぶ距離が(20~50)cmの範囲となる大きさとし、羽根枚数を2枚もしくは3枚に限定し、大気中にて設置されるため耐候性、風圧による強度に対する耐久性を得るため羽根部材の厚みを(0.3~1.0)mmとする。【選択図】図1
