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Why do birds migrate?
03-01-2007 · EurekAlert!Contrary to the textbooks, birds don't go south just for the tropical fruit and balmy weather. It's an issue of food security, according to new research.
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Keywords: birds, migrate, bird
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- Land conversion and climate threaten land birds
06-04-2007 · EurekAlert!
Evaluating changes in range size of land bird species using Millenium Ecosystem Assessment scenarios reveals that land conversion, as well as climate change, will lead to the decline of many species, particularly those in the tropics.
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- Scientists find mutations that let bird flu adapt to humans
11-15-2006 · EurekAlert!
By comparing influenza viruses found in birds with those of the avian virus that have also infected human hosts, researchers have identified key genetic changes required for pandemic strains of bird flu.
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- Birds found to plan for the future
02-21-2007 · EurekAlert!
Planning and worrying about the future has always been considered an exclusively human activity, but now one species of bird has also been found to plan for tomorrow. The finding, published in Nature, raises the possibility that, like humans, birds may get anxious about the future. The birds, western scrub-jays, are shown to have learned from their previous experiences of food scarcity, storing food for future use in places where they anticipate future slim pickings.
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- ASU research shows connection between testosterone, dietary antioxidants and bird coloration
06-11-2007 · EurekAlert!
Mom may have been right all along, especially when we were hormone-raging teenagers: Eat your veggies and good things will happen. In a new physiological study of birds, a researcher at Arizona State University has found that carotenoids, the pigments that color carrots orange and corn yellow, have even deeper health benefits than originally thought. They appear to fight off the negative impacts that testosterone can have on an animal's health.
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- Cities change the songs of birds
12-04-2006 · EurekAlert!
By studying the songs of a bird species that has succeeded in adapting to urban life, researchers have gained insight into the kinds of environmental pressures that influence where particular songbirds thrive, and the specific attributes of city birds that allow them to adjust to noisy urban environments. The findings, reported by Hans Slabbekoorn and Ardie den Boer-Visser of Leiden University, appear in the December 5 issue of Current Biology.
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- Crowcam: Camera on bird's tail captures bird ingenuity
10-06-2007 · Science News Online
Video cameras attached to tropical crows record the birds' use of plant stems as tools to dig out food.
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- New research predicts US entry of H5N1 avian influenza
12-04-2006 · EurekAlert!
Scientists at the Consortium for Conservation Medicine, the Royal Society for the Protection of Birds and the Smithsonian Institution's National Zoo predict that bird flu will most likely be introduced to countries in the Western Hemisphere through infected poultry trade rather than from migrating birds from eastern Siberia, as previously thought. The research will be published online in the Proceedings of the National Academy of Sciences in December.
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- West Nile virus hits bird populations
06-30-2007 · Science News Online
West Nile virus has hammered populations of five common North American birds.
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- Bird sex is something else
03-21-2007 · EurekAlert!
We've all heard about the birds and the bees. But apparently when it comes to birds, they have an unusual take on his and hers -- and the difference is genetic. Research published today in the Journal of Biology shows that birds are extraordinary, because some bird genomes can live with an apparent overdose of sex-related genes.
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- What determines the speed at which birds fly?
07-16-2007 · EurekAlert!
Measurement of flight speeds of 138 species of bird reveals that mass and wing loading do not scale according to aerodynamic theory but vary significantly depending on phylogeny.
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