Tag Archives: Gloger’s Rule
Gloger’s Rule
An ecogeographical rule concerns itself with the variation of traits (mainly morphological) of an organism over geographical gradients. In 1833 Constantin Wilhelm Lambert Gloger (1803 – 1863), a German ornithologist and zoologist, proposed that within a species of warm-blooded animals, … Continue reading
Posted in Birds
Tagged ecogeographical, eumelanin, Gloger's Rule, melanin, Melospiza melodia, natural history, pheomelanin, song sparrow
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