noun
migratory bird; bird of passage
Refers to birds that travel seasonally between regions. Can also be used figuratively for a person who moves frequently.
毎年、たくさんの渡り鳥がこの湖にやって来る。
Every year, many migratory birds come to this lake.
彼は仕事を転々とする渡
He leads a bird-of-passage kind of life, moving from job to job.