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.

We surveyed the number of Indian meal moths (Plodia interpunctella) captured using sex pheromone traps placed inside a cemetery and three parks (F, SB, and SO parks) and outside of an apartment complex in Minato-ku, Tokyo, from May to November. In July, we surveyed the source of larvae at each site. Adult male moths were captured from May to November, with the numbers decreasing in November. The largest capture of 267 moths was outside the apartment complex, followed by 119 moths at the SO park, 116 moths at the cemetery garden, 38 moths at the F park, and 25 moths at the SB park. It was not possible to identify the source of the larvae at any of the survey sites.