渡わたりの時じ期き

noun, expression

bird migration period; migration season

Refers to the time of year when birds migrate. Often used in contexts like birdwatching or ecology.

• 渡わたりの時じ期きには、たくさんの鳥とりがこの湖みずうみに集あつまる。

  During the migration period, many birds gather at this lake.

• 渡わたりの時じ期きはいつですか？

  When is the migration season?