Description: Currently you are watching Sexual selection among birds porn video. You can find more videos like Sexual selection among birds below in the related videos section. Robert Heinsohn, professor of evolutionary biology at the Australian National University, explains. Males are more colorful or ornamented than females in most, but not all, bird species. Understanding this phenomenon requires a basic grasp of the evolutionary forces that shape the behavior and morphology of individuals and species. Charles Darwin developed much of the theory that helps explain this. He proposed that traits promoting survival in individuals are favored by the process of natural selection, whereas traits that help the individuals of just one sex usually the males compete for mates are favored by sexual selection. Sexual selection is responsible for many of the features unique to one sex in a given species. Sexual selection in birds concerns how birds have evolved a variety of mating behaviors, with . Uropygial secretion composition is known to differ among individuals. This evidence was supported by another study using a different species, the.
Added: 21.01.2019 at 09:29
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