Migration,Animal

《英文msh詞典》Migration,Animal
[同義詞] Migration,Animal
[主題詞] Animal Migration
[中文釋義] 遷徙,動物
[英文釋義] Periodic movements of animals in response to seasonal changes or reproductive instinct. Hormonal changes are the trigger in at least some animals. Most migrations are made for reasons of climatic change,feeding,or breeding.