HKBWS BBS 香港觀鳥會新聞組


    
      
        HKBWS BBS 香 港 觀 鳥 會 新 聞 組
        (http://www.hkbws.org.hk/cgi-bin/YaBB.pl)
      

        Discussion Area 討論區 >> General 一般問題 >>  Birds can see ultraviolet 雀鳥可見紫外光
        
(Message started by: Webcreeper on Jul 26^th, 2006, 6:56pm)

Title: Birds can see ultraviolet 雀鳥可見紫外光
Post by Webcreeper on Jul 26^th, 2006, 6:56pm

Scientific American July 2006 What Birds See (http://www.sciam.com/article.cfm?chanID=sa006&colID=1&articleID=000DA6AC-F10C-1492-A7CE83414B7F0000)

We humans customarily assume that our visual system sits atop a pinnacle of evolutionary success. It enables us to appreciate space in three dimensions, to detect objects from a distance and to move about safely. We are exquisitely able to recognize other individuals and to read their emotions from mere glimpses of their faces. In fact, we are such visual animals that we have difficulty imagining the sensory worlds of creatures whose capacities extend to other realms--a night-hunting bat, for example, that finds small insects by listening to the echoes of its own high-pitched call.

國內版《環球科學》2006 年第八期 (http://www.sciam.com.cn/article.php?articleid=284)
鳥眼看世界：更繽紛的色彩

人類雖然號稱“萬物之靈”，卻在進化的滄海桑田間，早早捨棄了一部分絢爛的色彩，專注於今天我們眼中的世界。而鳥類卻不同，擁有4種視錐細胞的獨特視覺系統，讓它們保留了看到紫外光的能力，能看到超越人類眼界的繽紛世界。