Research suggests density of hairdressers in an area - and resulting human hair - affects rate of lost toes For a long time scientists thought the fact that pigeons in urban environments often lost their toes was due to some form of infection, or was a reaction to chemical pollutants. But now researchers in France believe they've stumbled upon the real culprit: human hair.
Research suggests density of hairdressers in an area - and resulting human hair - affects rate of lost toes For a long time scientists thought the fact that pigeons in urban environments often lost their toes was due to some form of infection, or was a reaction to chemical pollutants. But now researchers in France believe they've stumbled upon the real culprit: human hair.
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