The Western scrub-jay is native to the western United States, and, like squirrels and other food-caching animals, these birds readily store food for the future and recover their caches at a later date. It was already known that the jays can plan ahead and store food in places where they have learned they will be hungry the next morning and where they know the type of food will not be available. But a key issue had remained unresolved—namely, whether the birds can plan ahead in response to a motivation or desire they do not experience in the present. In other words: Can the birds know what they are going to want in the future?
In new research, appearing online on April 26th in the journal Current Biology, published by Cell Press, Sergio Correia, Tony Dickinson, and Nicky Clayton of the University of Cambridge, UK, used a phenomenon called “specific satiety” to address this issue. Like many other animals, when sated of one type of food, Western scrub-jays prefer to eat and store another type of food. Correia and colleagues used this effect to ask whether the birds prefer to store the food they want now or the food they think they will want when they come to recover their caches in the future. At the start of the experiment, the birds stored the food they desired at the time, but the birds switched to storing the food that was valuable at the time of recovery rather than the one they wanted to eat at the time of caching.
These experiments provide the first-ever evidence that animals can plan future actions not only on the basis of what they currently desire, but also on the basis of what they anticipate they will desire in the future. This is another striking example of how animals show features of intelligence that were once thought to be uniquely human.
Erin Doonan | EurekAlert!
Helping to Transport Proteins Inside the Cell
21.11.2018 | Albert-Ludwigs-Universität Freiburg im Breisgau
UNH researchers create a more effective hydrogel for healing wounds
21.11.2018 | University of New Hampshire
Innsbruck quantum physicists have constructed a diode for magnetic fields and then tested it in the laboratory. The device, developed by the research groups led by the theorist Oriol Romero-Isart and the experimental physicist Gerhard Kirchmair, could open up a number of new applications.
Electric diodes are essential electronic components that conduct electricity in one direction but prevent conduction in the opposite one. They are found at the...
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
21.11.2018 | Life Sciences
21.11.2018 | Power and Electrical Engineering
21.11.2018 | Life Sciences