Assertion: comb | /r/CapableOf | serve as visual cues
Facets:
Source sentences:
text: Avian combs are secondary sexual structures—acquired traits not associated with the reproductive system that confer an advantage over potential rivals during courtship and mating—used in female mate selection or male-male competition, where size and color (due to the highly vascularized superficial dermis and presence of carotenoid pigments []) of a comb serve as visual cues that signal the relative health or fertility of an individual [].