(Phys.org)—A new University of South Florida study of house sparrows, which have become one of the world's most common invasive species, is providing scientists with physiological and behavior markers that could help keep ...
Plants & Animals
Sep 11, 2012
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(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 many cases plumage ...
Plants & Animals
Oct 21, 2011
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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 BMC Evolutionary ...
Evolution
Aug 26, 2010
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(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 conspecifics ...
Plants & Animals
Jun 4, 2010
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