The phrase "渡り鳥 いつまた帰る" is primarily known as the title of a Japanese song and a series of films called "渡り鳥いつまた帰る" ("When Will the Migratory Bird Return?"). The phrase literally means "Migratory bird, when will (it) return again?" The migratory bird metaphorically refers to a person who leaves and eventually comes back. In the cultural context, it often refers to themes of departure, longing, and return, but it is not specifying a particular time when migratory birds actually return in nature. The phrase functions poetically or symbolically rather than as a literal question about timing. If you are seeking the natural biological timing of migratory birds' return, that varies by species and region, typically happening seasonally in spring or autumn. Summary:
- "渡り鳥 いつまた帰る" is a symbolic phrase meaning "Migratory bird, when will (it) come back again?" used in songs and films.
- It evokes themes of return and longing rather than a specific natural timing.
If you want details about the natural behavior of migratory birds rather than cultural references, I can find that information as well.
