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Subject: [Oversea] Barn swallows get broody while world warms 全球暖化如何影響家燕繁殖 [Print This Page]

Author: Webcreeper Time: 13/01/2007 16:41 Subject: Barn swallows get broody while world warms 全球暖化如何影響家燕繁殖

13 January 2007 From New Scientist Print Edition.
13/1/07 英國《新科學家雜誌》

1971 到 2005 年間丹麥北部 Kraghede 區內四月的平均氣溫升高了攝氏2.2度，
當地的家燕開始繁殖的時間提前了，
每窩孵出的幼鳥數目增加，
而在同年所產兩窩之間的時間也延長了。

Barn swallows get broody while world warms

WARMER spring temperatures and a longer growing season are proving to be good news for barn swallows. Over the past 35 years these birds have responded to global warming by taking more time over rearing their chicks.

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