European Birds Fear Women More Than Men, Scientists Puzzled

Birds across European cities are keeping their distance from women, and scientists are scratching their heads over why.

Researchers studying 37 bird species, including European Great Tits, magpies, and pigeons, discovered something strange. Men could get about a meter closer to the birds before they flew away, compared to women approaching the same species.

The finding held true no matter what people wore, how tall they were, or how they tried to approach the birds. That consistency suggests urban birds have somehow learned to distinguish between male and female humans.

"I fully believe our results, that urban birds react differently based on the sex of the person approaching them, but I can't explain them right now," said Daniel Blumstein, a UCLA professor who co-authored the study.

The research team studied birds in urban centers across five European countries. They tested species known for quick escapes like magpies alongside more relaxed birds like pigeons. Every species showed the same pattern of greater wariness around women.

Why This Inspires

This puzzle reveals something wonderful about the natural world living right alongside us. Urban birds possess far more sophisticated abilities to read their environment than we ever imagined.

The researchers have some guesses about how birds might tell people apart. They could be detecting chemical signals like pheromones, recognizing differences in body shape, or even picking up on the way different people walk.

Blumstein suggested future studies might need to test unusual approaches. "Perhaps a study resembling Monty Python's Ministry of Silly Walks," he joked, referring to the famous comedy sketch.

The phenomenon isn't unique to birds either. Previous research found that lab rats experience more stress when male researchers handle them compared to female researchers.

"We have identified a phenomenon, but we really don't know why," said study co-author Federico Morelli from the University of Turin. "However, what our results do highlight is the birds' sophisticated ability to evaluate their environment."

The mystery opens exciting new questions about how wildlife adapts to city life and what hidden abilities animals develop when living near humans.