Thursday 7 August 2014

Horses' mobile ears are 'communication tool'


5 August 2014 Last updated at 07:45

By Victoria Gill
Science reporter, BBC News

Very mobile ears help many animals direct their attention to the rustle of a possible predator.

But a study in horses suggests they also pay close attention to the direction another's ears are pointing in order to work out what they are thinking.

Researchers from the University of Sussex say these swivelling ears have become a useful communication tool.

Their findings are published in the journal Current Biology.

The research team studies animal behaviour to build up a picture of how communication and social skills evolved.

"We're interested in how [they] communicate," said lead researcher Jennifer Wathan.

"And being sensitive to what another individual is thinking is a fundamental skill from which other [more complex] skills develop."

Ms Wathan and her colleague Prof Karen McComb set up a behavioural experiment where 72 individual horses had to use visual cues from another horse in order to choose where to feed.

They led each horse to a point where it had to select one of two buckets. On a wall behind this decision-making spot was a life-sized photograph of a horse's head facing either to left or right.

In some of the trials, the horses ears or eyes were covered.

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