News tagged with sparrow
For monogamous sparrows, it doesn't pay to stray (but they do it anyway)
It's quite common for a female song sparrow to stray from her breeding partner and mate with the male next door, but a new study shows that sleeping around can be costly.
May 22, 2012 |
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Scientists learn much about humans from birds' singing lessons
Why wasn't this intruder getting the message? The lord of the manor had warned him repeatedly to back off, with threatening gestures and loud admonitions. But the trespasser just sat there - singing.
May 18, 2012 |
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Sparrows change their tune to be heard in noisy cities
Sparrows in San Francisco's Presidio district changed their tune to soar above the increasing cacophony of car horns and engine rumbles, details new George Mason University research in the April edition of ...
Apr 02, 2012 |
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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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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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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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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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It takes two to tutor a sparrow
(PhysOrg.com) -- It may take a village to raise a child, and apparently it takes at least two adult birds to teach a young song sparrow how and what to sing.
Oct 21, 2009 |
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Bird songs change with environment
Just as a changing radio landscape has made it tough for Foghat to get much airplay these days, so it is for birdsongs according to new research published in The American Naturalist.
May 20, 2009 |
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Why the swamp sparrow is hitting the high notes
Birdsongs are used extensively as models for animal signaling and human speech, offering a glimpse of how our own communicating abilities developed. A new study by Adrienne DuBois, a graduate student at the ...
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Jan 09, 2009 |
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New technology tracks sparrow migration for first time from California to Alaska
Using tiny tags to track a bird's location, biologists from PRBO Conservation Science (PRBO) have unlocked the mystery of where Golden-crowned Sparrows, which overwinter in California, go to breed in the spring. Published ...
Apr 11, 2012 |
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