Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Betty The Crow Is Right-Handed

06.04.2004


New Caledonian crows, known to be very proficient tool-users, have a preferred way of holding their tools comparable to the way humans are either right- or left-handed, according to research by Oxford zoologists, recently published in ’Biology Letters’.


Crow using dowelling to extract mealworms from a hole; holding it with the non-working end against its right cheek Credit: University of Oxford JPG



Studying the tool use of 10 captive New Caledonian crows, the researchers found that each bird had a consistent preference for holding a piece of dowelling either near its left or its right cheek when trying to retrieve mealworms from a hole in a piece of wood. Five of the birds preferred to use tools left-laterally, and five right but laterality did not obviously differ between male and female crows.

The findings are surprising as it is rare to find animals with such exclusive lateral preferences for manipulative tasks. Only 50 per cent of chimpanzees, for example, are committed to always using the same hand for tool use.


Mr Alex Weir of the Behavioural Ecology Research Group at the Oxford University’s Department of Zoology said: ’Our results show that individuals have very strongly preferred ways to hold tools but there is no apparent population preference. This result is still preliminary, since the sample size is too small to firmly conclude that there is not population-level laterality.

’However these results appear to contrast with other research, which showed that crows have a population-level bias for manufacturing tools, suggesting that the manufacturing and use of tools in this species may have different neural underpinnings.’

Barbara Hott | alfa
Further information:
http://users.ox.ac.uk/~kgroup/tools/laterality.html

More articles from Life Sciences:

nachricht New risk factors for anxiety disorders
24.02.2017 | Julius-Maximilians-Universität Würzburg

nachricht Stingless bees have their nests protected by soldiers
24.02.2017 | Johannes Gutenberg-Universität Mainz

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>