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Status symbols of house sparrows


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Lathander

    Lathander


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Geplaatst op 04 juni 2010 - 15:32

http://www.scienceda...00604073715.htm


ScienceDaily (June 4, 2010) 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 and are correlated with his testosterone levels. These levels are generally higher before and during breeding season than for example during moult in autumn

"Invisible Pink Unicorns are beings of great spiritual power. We know this because they are capable of being invisible and pink at the same time. Like all religions, the Faith of the Invisible Pink Unicorns is based upon both logic and faith. We have faith that they are pink; we logically know that they are invisible because we can't see them."


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