News tagged with sparrow
Scared of a younger rival? Not for some male songbirds
When mature male white-crowned sparrows duel to win a mate or a nesting territory, a young bird just doesn't get much respect.
Feb 08, 2012 |
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Elaborate plumage due to testosterone?
(PhysOrg.com) -- In many bird species males have a more elaborate plumage than females. This elaborate plumage is often used to signal body condition, to intimidate rivals or to attract potential mates. In ...
Oct 21, 2011 |
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West Nile virus transmission linked to land use patterns and 'super-spreaders'
After its initial appearance in New York in 1999, West Nile virus spread across the United States in just a few years and is now well established throughout North and South America. Both the mosquitoes that ...
Oct 20, 2011 |
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Bird song-sharing like verbal sparring
While singing the same songs as your neighbours may sound harmonious, research conducted at Queen's University Biological Station (QUBS) suggests that song-sharing amongst song sparrow populations is actually ...
Aug 10, 2011 |
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It's no sweat for salt marsh sparrows to beat the heat if they have a larger bill
Birds use their bills largely to forage and eat, and these behaviors strongly influence the shape and size of a bird's bill. But the bill can play an important role in regulating the bird's body temperature ...
Jul 20, 2011 |
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Study finds that memory works differently in the age of Google
The rise of Internet search engines like Google has changed the way our brain remembers information, according to research by Columbia University psychologist Betsy Sparrow published July 14 in Science.
Medicine & Health / Neuroscience
Jul 14, 2011 |
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Brainy lizards pass test for birds
Tropical lizards may be slow. But they aren't dumb. They can do problem-solving tasks just as well as birds and mammals, a new study shows.
Jul 13, 2011 |
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Birdsong independent of brain size
(PhysOrg.com) -- The brains of all vertebrates display gender-related differences. In songbirds, for example, the size of the brain areas that control their singing behaviour could be linked to the size of ...
Jun 13, 2011 |
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Parents' social problems affect their children -- even in birds
A recent study performed by Floriane Guibert and Cecilia Houdelier at the CNRS-University of Rennes in France, together with researchers at the INRA in Nouzilly, France and with Austrian scientists including Erich Mostl of ...
Dec 27, 2010 |
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Ugly Betty forced to aim for Average Joe
Less-pretty female house sparrows tend to lower their aim when selecting a mate. Addressing the lack of studies on condition-dependency of female mate choice, researchers writing in the open access journal ...
Aug 26, 2010 |
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Migrating birds can't control themselves
During the Spring and Fall migratory seasons, sparrows become significantly less capable of resisting temptation. Researchers writing in the open access journal BMC Neuroscience investigated impulse control and sleep in Whi ...
Jul 28, 2010 |
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Status symbols of house sparrows: High testosterone darkens their bill
(PhysOrg.com) -- The size of the black breast bib - the badge - and bill colour of male House Sparrows change over the course of the year. Such ornaments usually signal quality and dominance of a male to his ...
Jun 04, 2010 |
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Birds of a feather don't always respond together to infection
(PhysOrg.com) -- A Princeton University-led research team is the first to have documented that different populations of the same animal species respond differently with fever when fighting infection in the ...
Apr 14, 2010 |
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Only some like it hot: How birds from different populations react to infections
With the help of new radiotelemetry technology, researchers from the University of Princeton and the Max Planck Institute for Ornithology in Radolfzell have now succeeded, for the first time, in studying fever ...
Mar 31, 2010 |
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Researchers Identify the Most Promiscuous Birds in the World
(PhysOrg.com) -- UConn ornithologist Chris Elphick and his colleagues carried out DNA tests to discover the paternity of Saltmarsh Sparrow nestlings.
Dec 09, 2009 |
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