How smart is your parakeet or that crow in the back yard? Ask Dr. Louis Lefebvre, inventor of the world’s only comprehensive avian IQ index. His intelligence index is not only separating the featherweights from the big bird brains, it’s also providing clues about why some birds make great immigrants, as well as insight into the parallel evolution of primate and bird brains.
The smarts pecking order is based not on a single bird-in-cage test, but on 2,000 reports of feeding innovations that have been observed in the wild and published in the world’s ornithology journals. "Initially, quite honestly, I didn’t think it would work," says Dr. Lefebvre, an animal behaviourist at McGill University in Montreal, Canada, who first reported the bird bell curve system in 1997. "Scientists don’t like anecdotal evidence. So if you’re wary of one anecdote, why would you expect to find a valid pattern in 2,000? I’ve been waiting for something to come up that would invalidate the system, but nothing has."
The biologist, whose work is supported by Science and Engineering Research Canada (NSERC), will present his latest findings at the 2005 American Association for the Advancement of Science meeting in Washington D.C. on February 21.
Microscope measures muscle weakness
16.11.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
Good preparation is half the digestion
16.11.2018 | Max-Planck-Institut für Stoffwechselforschung
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...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences