Patterns in heron landings in relation to bird-dropping nuisance in Yokosuka, Japan

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  • Shirai Masaki
    Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry
  • Sugimoto Toshifumi
    Electric Power Research & Development Center, Chubu Electric Power Co., Inc.
  • Itoh Norihiko
    Energy Innovation Center, Central Research Institute of Electric Power Industry
  • Kado Hiroyuki
    Electric Power Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • Nakajima Chikahito
    Energy Innovation Center, Central Research Institute of Electric Power Industry
  • Takeuchi Toru
    Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry

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  • 横須賀市におけるフン害発生地点のサギ類の飛来パターン
  • ヨコスカシ ニ オケル フンガイ ハッセイ チテン ノ サギルイ ノ ヒライ パターン

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<p>We observed patterns in heron landings in relation to bird droppings on the High-power Testing Laboratory of the Central Research Institute of Electric Power Industry in Yokosuka, Kanagawa Prefecture, Japan, from June 2015 to September 2015. The number of herons landing on the laboratory was the highest in June, corresponding to their breeding season, and began to decrease in July. Most heron landings on the laboratory (68％) were observed to occur around dawn. Our observations suggest that the risk of bird-dropping nuisance due to herons around the laboratory is relatively high in the early morning during the breeding season.</p>

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