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【英语时差8,16】为什么雄鸟如此多娇

时间:2015-12-07 06:15来源:互联网 提供网友:yajing   字体: [ ]
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    (单词翻译:双击或拖选)
Ya?l: Hey, Don, How come a rooster is fancier than a hen?
Don: Ummm! I dunno, Ya?l. So drivers can see it when it crosses the road.
Y: Nice try, but males birds are more brightly colored and have more ornamented1 feathers than females for two reasons. First, so they can compete with each other for territory. Second, so they can attract mates.
D: How do they do that?
Y: Males use feather color to warn potential rivals that they occupy a piece of territory. Red-winged black bird males flash hidden red feathers on their upper wings called epaulets. Scientists have found that when a male's epaulets are dyed black, he is more likely to lose his territory.
When it's time to mate, male birds show off their plumage to attract a mate. In experiments, female house finches prefer to mate with redder males while female pea fowl2 like males with big tails. Scientists think females use male feather color and condition as a way to determine if he is healthy or will take good care of their nestlings. For example, redder cardinal3 males make better fathers by taking on more of the feeding responsibility.
D: So, fancy feathers mean a bird's healthy?
Y: Yes. That is the case with the Pied Flycatcher where males can be colored brown to black. Scientists have found that the more food a nestling receives, the bigger and healthier it is, and the blacker its color. Light feather color can also indicate disease. Chickens with a parasite4 known as coccidia are less colorful than healthy birds.
D: I understand now. If I want to attract the ladies, I should wear red Hawaiian shirts.  

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1 ornamented af417c68be20f209790a9366e9da8dbb     
adj.花式字体的v.装饰,点缀,美化( ornament的过去式和过去分词 )
参考例句:
  • The desk was ornamented with many carvings. 这桌子装饰有很多雕刻物。 来自《简明英汉词典》
  • She ornamented her dress with lace. 她用花边装饰衣服。 来自《简明英汉词典》
2 fowl fljy6     
n.家禽,鸡,禽肉
参考例句:
  • Fowl is not part of a traditional brunch.禽肉不是传统的早午餐的一部分。
  • Since my heart attack,I've eaten more fish and fowl and less red meat.自从我患了心脏病后,我就多吃鱼肉和禽肉,少吃红色肉类。
3 cardinal Xcgy5     
n.(天主教的)红衣主教;adj.首要的,基本的
参考例句:
  • This is a matter of cardinal significance.这是非常重要的事。
  • The Cardinal coloured with vexation. 红衣主教感到恼火,脸涨得通红。
4 parasite U4lzN     
n.寄生虫;寄生菌;食客
参考例句:
  • The lazy man was a parasite on his family.那懒汉是家里的寄生虫。
  • I don't want to be a parasite.I must earn my own way in life.我不想做寄生虫,我要自己养活自己。
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