Mittwoch, 23. Februar 2011

Waves of sleep wash over seagulls

Seagulls learn to doze when others do, triggering 'waves' of sleep through seabird colonies, a study reveals.

Source: http://news.bbc.co.uk/go/rss/int/news/-/earth/hi/earth_news/newsid_9400000/9400770.stm

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