英国将两种鸟类列入濒危物种
文章来源:未知 文章作者:enread 发布时间:2011-09-07 07:09 字体: [ ]  进入论坛
(单词翻译:双击或拖选)

Two once-widespread woodland species of British birds have been put on the endangered list after a steep decline in their numbers.

两种曾经在英国普遍分布的林地鸟类因数量急剧下降而被列入濒危物种。

The <a href=lesser1 spotted2 woodpecker is now one of 103 species of birds being monitored" src="http://www.enread.com/upimg/allimg/110907/1_110907070940_1.jpg" width="226" height="282" />
The lesser spotted woodpecker is now one of 103 species of birds being monitored
Populations of the willow3 tit and lesser spotted woodpecker have dropped by 91% and 76% respectively since the 1970s, the RSPB said.

It is not clear why the species are declining; however, experts believe woodland changes may be playing a role.

The birds will now be monitored to find out why they are struggling to survive.

The Rare Breeding Birds Panel has also added the long-eared owl4, short-eared owl and Arctic skua to the list of species it now considers to be at risk.

Mark Eaton from the RSPB said: "It is tragic5 to think that within many people's memories these woodland birds were so widespread and now they are so rare.

"Since the 1970s, we've lost nine out of 10 pairs of willow tits and three out of four pairs of lesser spotted woodpecker, and in many areas these birds have disappeared completely."

'Essential snapshot'

The RSPB said the declines were "extremely alarming", with the birds disappearing altogether from counties where they were once found.

Experts say a lack of suitable management of forests which would allow new growth and provide birds with dead and decaying timber may be having an impact.

Willow tits may also be hit by wooded areas drying out.

Experts are now tracking 103 species of rare birds which regularly or occasionally nest in the UK.

They are calling on bird watchers to submit records if they see any of the birds which are on the at-risk register.

The panel's secretary Mark Holling said: "With so many species in trouble, these reports provide an essential snapshot of how our most threatened birds are faring.

"Whether it's the spectacular increase of the red kite, or the near extinction6 of the wryneck and the red-backed shrike, our information arms conservation groups and government agencies to help our rarest and most vulnerable birds."



点击收听单词发音收听单词发音  

1 lesser UpxzJL     
adj.次要的,较小的;adv.较小地,较少地
参考例句:
  • Kept some of the lesser players out.不让那些次要的球员参加联赛。
  • She has also been affected,but to a lesser degree.她也受到波及,但程度较轻。
2 spotted 7FEyj     
adj.有斑点的,斑纹的,弄污了的
参考例句:
  • The milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
  • Sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。
3 willow bMFz6     
n.柳树
参考例句:
  • The river was sparsely lined with willow trees.河边疏疏落落有几棵柳树。
  • The willow's shadow falls on the lake.垂柳的影子倒映在湖面上。
4 owl 7KFxk     
n.猫头鹰,枭
参考例句:
  • Her new glasses make her look like an owl.她的新眼镜让她看上去像只猫头鹰。
  • I'm a night owl and seldom go to bed until after midnight.我睡得很晚,经常半夜后才睡觉。
5 tragic inaw2     
adj.悲剧的,悲剧性的,悲惨的
参考例句:
  • The effect of the pollution on the beaches is absolutely tragic.污染海滩后果可悲。
  • Charles was a man doomed to tragic issues.查理是个注定不得善终的人。
6 extinction sPwzP     
n.熄灭,消亡,消灭,灭绝,绝种
参考例句:
  • The plant is now in danger of extinction.这种植物现在有绝种的危险。
  • The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。
TAG标签: species British birds
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