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Birds Can Tell If You Are Watching Them -- Because They Are Watching You

Date:
May 5, 2008
Source:
University of Bristol
Summary:
In humans, the eyes are said to be the 'window to the soul,' conveying much about a person's emotions and intentions. New research demonstrates for the first time that birds also respond to a human's gaze.

European starling. New research demonstrates that birds respond to a human's gaze.
Credit: iStockphoto/Andrew Howe

In humans, the eyes are said to be the 'window to the soul', conveying much about a person's emotions and intentions. New research demonstrates for the first time that birds also respond to a human's gaze.

Predators tend to look at their prey when they attack, so direct eye-gaze can predict imminent danger. Julia Carter, a PhD student at the University of Bristol, and her colleagues, set up experiments that showed starlings will keep away from their food dish if a human is looking at it. However, if the person is just as close, but their eyes are turned away, the birds resumed feeding earlier and consumed more food overall.

Carter said "This is a great example of how animals can pick up on very subtle signals and use them to their own advantage".

Wild starlings are highly social and will quickly join others at a productive foraging patch. This leads to foraging situations that are highly competitive. An individual starling that assesses a relatively low predation risk, and responds by returning more quickly to a foraging patch (as in the study), will gain valuable feeding time before others join the patch.

Responses to obvious indicators of risk -- a predator looming overhead or the fleeing of other animals -- are well documented, but Carter argued that a predator's head orientation and eye-gaze direction are more subtle indicators of risk, and useful since many predators orient their head and eyes towards their prey as they attack.

This research describes the first explicit demonstration of a bird responding to a live predator's eye-gaze direction. Carter added: "By responding to these subtle eye-gaze cues, starlings would gain a competitive advantage over individuals that are not so observant. This work highlights the importance of considering even very subtle signals that might be used in an animal's decision-making process."

Do these birds understand that a human is looking at them, and that they might pose some risk? As yet, this question has not been answered. But whether or not the responses involve some sort of theory of mind, and whether or not they are innate or acquired, the result is that starlings are able to discriminate the very subtle eye-gaze cues of a nearby live predator and adjust their anti-predator responses in a beneficial manner.

These results are published online April 30 in Proceedings of the Royal Society B.


Story Source:

The above story is based on materials provided by University of Bristol. Note: Materials may be edited for content and length.


Cite This Page:

University of Bristol. "Birds Can Tell If You Are Watching Them -- Because They Are Watching You." ScienceDaily. ScienceDaily, 5 May 2008. <www.sciencedaily.com/releases/2008/04/080430075912.htm>.
University of Bristol. (2008, May 5). Birds Can Tell If You Are Watching Them -- Because They Are Watching You. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2008/04/080430075912.htm
University of Bristol. "Birds Can Tell If You Are Watching Them -- Because They Are Watching You." ScienceDaily. www.sciencedaily.com/releases/2008/04/080430075912.htm (accessed July 24, 2014).

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