終しゅう鳴めい日び

noun

last day of the year a species sings or chirps

Technical term used in phenology and nature observation, often contrasted with 初鳴日 (first day of singing). Refers to the final date in a calendar year on which a particular bird or insect species is heard vocalizing.

See also: 初鳴日

• 今年ことしのウグイスの終しゅう鳴めい日びは10月がつ15日にちだった。

  The last day the bush warbler sang this year was October 15th.

• 気き象しょう台だいはセミの終しゅう鳴めい日びを記き録ろくしている。

  The meteorological observatory records the last day cicadas are heard.