An object of the present invention is by utilizing the found the findings, and repel the starling, driving away, to resolve the continuation of the current situation that has plagued the head starling repel. A is formed so as to be capable of attachment to the trees, in combination with starling repellent has been made, starling repellent device with a power unit and a light irradiation means, and has been prepared, the light projection by the projector is, in the region In response to form the state of trees and artificial buildings, in the region, over the next day from the evening the irradiation light of starling repellent device is irradiated to continue after the starling was formed the roost, and artificial build a light projection of the projector light irradiated toward the object, made in a form combining and continued light projecting time zone forms combining and continued light projection time period is performed over a predetermined number of days. BACKGROUND 2.【課題】判明した知見を活用することで、ムクドリを撃退、追い払い、ムクドリ撃退に頭を悩ましている現状の継続を解決する。【解決手段】樹木に取り付け可能に形成された、ムクドリ忌避剤との併用がなされた、電源手段および光照射手段を備えたムクドリ忌避具、および準備された、投光器による投光が、当該地域における樹木および人工的建造物の形態状態に対応して、当該地域に、ムクドリ忌避具の照射光を夕方から翌日にかけてムクドリがねぐらを形成した後に継続して照射し、投光器の投光を人工的建造物に向けて光照射する、継続した投光時間帯を組み合わせ形態でなされ、継続した投光時間帯を組み合わせ形態が、予め定めた日数に亘って実施される。【選択図】図2
