| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a conventional bird-repelling method cannot cope with accustomedness of birds to a set repelling tool obtained by learning ability of birds obtained by passage of time, with respect to the repelling tool set in the first time.SOLUTION: There is provided a magnet ball for repelling birds in which a plurality of circular recesses are provided on a spherical surface made of a non-magnetic material, and each circular magnet is fixed there, and a fitting tool is provided on a sphere body.SELECTED DRAWING: Figure 1 |
