| 1. | a bird that migrates seasonally. |
| 2. | a transient or migratory person. |

| bird of passage n. pl. birds of passage
|
bird of passage
A transient, one who is here today and gone tomorrow. For example, Mary moves nearly every year; she's a true bird of passage. This phrase transfers the literal meaning of a migrating bird to human behavior. [Second half of 1700s]