遷徒性 Migratory
形容動物為了覓食或繁殖周期性地從一個氣候區遷移到另一個氣候區。這能滿足它們在特定的生活時期所需要的環境條件，使個體的生存得以延續。
Used to describe animals moving from one area to another at regular times of a year for suitable environment for foraging, reproduction etc.. This enables them to stay in a suitable living environment for survival.
