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来源：百度知道 编辑：UC知道 时间：2024/05/29 18:56:30
It appears that birds are living longer and travelling further than scientists had previously thought .An international study has corrected the life expeetancy of several species,after birds---some wearing tags fitted more than 30 years ago ---were discovered living well beyong previously recorded ages.
British experts studied the habits of a varieed of species,all of which have been fitted with ring tags to help trace their movements.As a result , years have ben added to the assumed life expectancy of several species ang a much greater understanding has beenany reached as to how far mbirds rravel.
One barnacle goose was found to still be wearing a ring fited to leg 27 years earlier ,making it at least two and a half years older than the previous highest age recorded for that species. Taking into account annual spring and autumn mingrations, scientists calcuiate that the bird has covered at least 240ooo km during itslife.
In 2004 volunteers caught and ringed mor
British experts studied the habits of a varieed of species,all of which have been fitted with ring tags to help trace their movements.As a result , years have ben added to the assumed life expectancy of several species ang a much greater understanding has beenany reached as to how far mbirds rravel.
One barnacle goose was found to still be wearing a ring fited to leg 27 years earlier ,making it at least two and a half years older than the previous highest age recorded for that species. Taking into account annual spring and autumn mingrations, scientists calcuiate that the bird has covered at least 240ooo km during itslife.
In 2004 volunteers caught and ringed mor
似乎，鸟类要比科学家们预言的寿命更长,飞得也更远,在发现一些三十年前被做了标记的鸟实际寿命远远超出科学记载之后,一份国际研究报告更正了几种生物的预期寿命
英国生物学家给很多种动物做了标记,以追踪其活动轨迹,并对其生活习性进行研究,结果发现;一些种类活得更长,超出原来预期,而且对鸟类到底可以飞多远有了更深刻的了解
一只黑雁依然保持着27年前做的标记,打破了该种生物历史记载年龄最高记录,至少超出两年半,如果把每年的春秋迁徙也计算在内,在它有生之年,这只黑雁至少飞行了24000千米
1909年,标记实验兴起于英国,,2004年,志愿者们抓住和标记的鸟类数量多于以往,成鸟和幼鸟的数量共计 881 920,打破了先前1995年 859252的记录.,除了记录鸟类的寿命,例如36于1968年在诺福克标记了一只, 36岁的蛎鹬,于1962年在格温内思郡标记了一只海雀,科学家们还研究了那种鸟类飞得最远
飞得最远的鸟类之一为海燕,于1982年7月19日被做标记,2004年2月24日在纳米比亚海岸外被抓捕,这一期间冬季迁徙,共计飞行9489千米
" 制作标记报告是另人兴奋的,但是在一年里打破很多记录也是常有的”,标记研究项目负责人说”与人类不同,鸟类无须度过漫长的中年和老年,成年以后的日子里,它们会一直保持精力充沛的状态”
duo o