Featured Research

from universities, journals, and other organizations

Tool-making Birds: Necessity Is The Mother Of Invention For Clever Rooks

Date:
May 26, 2009
Source:
University of Cambridge
Summary:
Researchers have found that rooks, a member of the crow family, are capable of using and making tools, modifying them to make them work and using two tools in a sequence.

A bird is making a hook to access food.
Credit: Chris Bird

Researchers at the Universities of Cambridge and Queen Mary, University of London have found that rooks, a member of the crow family, are capable of using and making tools, modifying them to make them work and using two tools in a sequence. The results are published on-line this week in the journal Proceedings of the National Academy of Sciences.

Related Articles


"This finding is remarkable because rooks do not appear to use tools in the wild, yet they rival habitual tools users such as chimpanzees and New Caledonian crows when tested in captivity," said Chris Bird, the lead author of the study.

In a series of experiments, the rooks quickly learnt to drop a stone to collapse a platform and acquire a piece of food, and subsequently showed the ability to choose the right size and shape of stone without any training.

Not only could they use stones to solve the task, but they were flexible in their tool choice, using and modifying sticks to achieve the same goal. When the correct tool was out of reach, they used another tool to get it, demonstrating the ability to use tools sequentially. In further tests, the rooks were able to use a hook tool to get food out of a different tube and even creatively bent a straight piece of wire to make the hook to reach the food.

"We suggest that this is the first unambiguous evidence of animal insight because the rooks made a hook tool on their first trial and we know that they had no previous experience of making hook tools from wire because the birds were all hand-raised," said Dr Nathan Emery, Queen Mary University of London, in whose lab these experiments were performed.

These findings suggest that rooks' ability to use tools and represent the tools' useful properties may be a by-product of a sophisticated form of physical intelligence, rather than tool use having evolved as an adaptive specialisation, such as has been proposed for the tool using abilities of New Caledonian crows.

This work was carried out at the University of Cambridge by Christopher Bird, a PhD student, and his supervisor, Dr. Nathan Emery from Queen Mary University of London and was funded by the Royal Society, the BBSRC and the University of Cambridge.


Story Source:

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


Journal Reference:

  1. Insightful problem solving and creative tool modification by captive nontool-using rooks. Proceedings of the National Academy of Sciences, Online May 25, 2009

Cite This Page:

University of Cambridge. "Tool-making Birds: Necessity Is The Mother Of Invention For Clever Rooks." ScienceDaily. ScienceDaily, 26 May 2009. <www.sciencedaily.com/releases/2009/05/090525173540.htm>.
University of Cambridge. (2009, May 26). Tool-making Birds: Necessity Is The Mother Of Invention For Clever Rooks. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2009/05/090525173540.htm
University of Cambridge. "Tool-making Birds: Necessity Is The Mother Of Invention For Clever Rooks." ScienceDaily. www.sciencedaily.com/releases/2009/05/090525173540.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Monarch Butterflies Descend Upon Mexican Forest During Annual Migration

Monarch Butterflies Descend Upon Mexican Forest During Annual Migration

Reuters - Light News Video Online (Dec. 19, 2014) Millions of monarch butterflies begin to descend onto Mexico as part of their annual migration south. Rough Cut (no reporter narration) Video provided by Reuters
Powered by NewsLook.com
Birds Might Be Better Meteorologists Than Us

Birds Might Be Better Meteorologists Than Us

Newsy (Dec. 19, 2014) A new study suggests a certain type of bird was able to sense a tornado outbreak that moved through the U.S. a day before it hit. Video provided by Newsy
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins