| Birds smaller due to warmer temps | | Print | |
| Sunday, 14 March 2010 04:00 |
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A Swiss-U.S. study has found that over the last half century North American birds have become smaller by about 1.3% in mass. The fairly rapid evolution to a more compact size is concluded to be caused by climate change. Posted: 2010-03-13 09:33:26 |