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Feeding birds 'changes evolution'

Thanks to Ian for the link.
http://news.bbc.co.uk/2/hi/science/nature/8393443.stm

---European birds called blackcaps follow a different "evolutionary path" if they spend the winter eating food put out for them in UK gardens.

The birds' natural wintering ground is southern Spain, where they feed on the fruits that grow there.

Researchers describe the impact this well-intentioned activity has had on the birds in Current Biology journal.

Dr Martin Schaefer from the University of Freiburg in Germany led the research.

He and his team found that blackcaps that migrated to the UK for the winter were in the very earliest stages of forming a new species.

He explained that some blackcaps (Sylvia atricapilla) would always have migrated "a little further north" than others and eventually "ended up in Britain in the winter".
...
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http://news.bbc.co.uk/2/hi/science/nature/8393443.stm

TAGGED: BEHAVIOR, EVOLUTION


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