According to the BBC, scientists discovered that "cockatoos could complete the five-step mechanical puzzle to reach their goal - a cashew nut treat."
Researchers presented 10 birds with a box containing a cashew nut treat, which they could reach by removing five different interlocking devices.
One of the Goffin's cockatoos, called "Pipin", solved the complex mechanical puzzle unassisted within two hours.
Several other birds mastered the task after observing peers or being presented with the locks incrementally.
The study, carried out by scientists from the University of Oxford in the UK, the University of Vienna in Austria and the Max Planck Institute in Germany, is published in the journal PLoS One.
To reach the nut, the captive Goffin's cockatoos (Cacatua goffini) had to remove a pin, followed by a screw, a bolt, then turn a wheel and move a latch sideways.
|Research Reveals Major Insight into Evolution of Life on Earth|
|13 more things that don't make sense|
|The World's Largest Scale Model of the Solar System? It's In Sweden and it's as Big as the Country Itself|
|Short Animation Explains DNA|
|Apple Sets the Screen of Each Laptop in its Stores At Exactly the Same Angle|
|Everything We've Learnt About the Surveillance State|
|How to Avoid Jury Duty|
|Go the Fuck to Sleep: A Children's Bedtime Book|
|“Put words between buns.”|
|“He portrays these abandoned malls as apocalyptic ruins.”|
|“Rejuvenation is Finally an Industry.”|
|Japanese Robot Serves Ice Cream From Inside a Vending Machine|
|“The cost could be so near to zero it will effectively be free.”|
|Cure for Gayness? There's an App for That|
|Sensually Retro Illustrations by Simone Massoni|
|The BROpener: Any Surface Becomes a Bottle Opener|
|Good Fucking Design Advice|