An anonymous reader writes "Milder winter weather has caused a wild breed of Scottish sheep to shrink in size by around 5% over the last 25 years, and now experts think they understand why.
Curiously this has occurred despite the evolutionary benefits of large body size in the harsh conditions in which the animals live.
The research, reported today in the U.S. journal Science, suggests a mechanism by which climate change can very rapidly act to alter the size and shape of a species." Link to Original Source
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