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SSS 2011-04-28

时间:2011-05-12 05:45来源:互联网 提供网友:wp661375   字体: [ ]
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Cities have a lot to offer, theater, music, restaurants, birds...Yes, birds.
But city birds are not other birds, because big cities inhabited by birds with big brains, that's according to a study in the Journal Biology Letters.


It can take smarts to to survive in the big city, especially for birds, the open environment is very different the one which their ancestors were born and fledged, but the city birds really need more gray matter to make it.
Scientist surveyed 82 species of passerine birds, including sparrows, pigeons any thing that perches1 in and around 12 cities in central Europe, they classify the birds those that bred in the Heart of the city, or those that avoid the hustle2 and bustle3.
And then they compare the bird brains,the results,  birds that prosper4 around the city street, have larger brains than their pastoral relations.
So they it seems novel environments including open landscapes may select for street smarts, at least for birds that flown toward the city lights, urban area that continues to spread, so to survive, our feathered friends may need to spend their mind as they spread their wings.


点击收听单词发音收听单词发音  

1 perches a9e7f5ff4da2527810360c20ff65afca     
栖息处( perch的名词复数 ); 栖枝; 高处; 鲈鱼
参考例句:
  • Other protection can be obtained by providing wooden perches througout the orchards. 其它保护措施是可在种子园中到处设置木制的栖木。
  • The birds were hopping about on their perches and twittering. 鸟儿在栖木上跳来跳去,吱吱地叫着。
2 hustle McSzv     
v.推搡;竭力兜售或获取;催促;n.奔忙(碌)
参考例句:
  • It seems that he enjoys the hustle and bustle of life in the big city.看起来他似乎很喜欢大城市的热闹繁忙的生活。
  • I had to hustle through the crowded street.我不得不挤过拥挤的街道。
3 bustle esazC     
v.喧扰地忙乱,匆忙,奔忙;n.忙碌;喧闹
参考例句:
  • The bustle and din gradually faded to silence as night advanced.随着夜越来越深,喧闹声逐渐沉寂。
  • There is a lot of hustle and bustle in the railway station.火车站里非常拥挤。
4 prosper iRrxC     
v.成功,兴隆,昌盛;使成功,使昌隆,繁荣
参考例句:
  • With her at the wheel,the company began to prosper.有了她当主管,公司开始兴旺起来。
  • It is my earnest wish that this company will continue to prosper.我真诚希望这家公司会继续兴旺发达。
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