Sexual and natural selection in the evolution of extended phenotypes: the use of green nesting material in starlings.

Abstract excerpt

Although sexual selection is typically considered the predominant force driving the evolution of ritualized sexual behaviours, natural selection may also play an important and often underappreciated role. The use of green aromatic plants among nesting birds has been interpreted as a component of extended phenotype that evolved either via natural selection due to potential sanitary functions or via sexual...

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