Mother nature always knows.
The case involves a rare herd of wild sheep on the remote Scottish island - known in Scottish Gaelic as Hirta - that are refusing to bow to conventional evolutionary pressure, which says big is best. Instead, they have steadily decreased in size since the 1980s.
Scientists have now stepped in to solve the conundrum, and fingered the culprit as the new Moriarty of mankind: global warming.
The experts say shorter and milder winters mean that lambs do not need to put as much weight on during their first few months of life. Smaller animals that would have perished in harsh winters a few decades ago can now survive to their first birthday. As a result, the average weight of the sheep has dropped by 81g each year.
Main & gay blog