The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
qian fen zhi san lei ji chu de hou niao ke xue cai fang hou niao yan jiu xian xing zhe zhang zuo yun jiao shou he yang ruo li jiao shou
Author(s): 
Pages: 16-19
Year: Issue:  3
Journal: Knowledge is Power

Abstract: 知力 动物迁徙有哪些独特的行为? 张孚允:迁徙是动物跨越不同地域觅食或繁殖的行为.一般来说将动物在固定季节的长距离移动叫作迁徙,而把像高山动物在冬天向低地寻食或栖息的短距离移动,叫作移动或迁移.迁徙主要分为繁殖迁徙和寻食迁徙及越冬迂徙,如候乌、大马哈鱼在繁衍后代或躲避寒冷可能迁徙上万千米;大西洋太平洋中鲱鱼跟随洋流游动寻找食物.还有一种特殊的漫游型迁徙,这种方式也具有季节性,但移动方向不固定,例如青藏高原著名的胡兀鹫,每当冬天尸体较少时,胡兀鹫就要到处漫游寻食.
Related Articles
No related articles found