Assertion: carotenoid | /r/ObjectUse | used see puffin birds
Facets:
value: in ornamental traits
type: OTHER
value: for extreme examples
type: PURPOSE
Source sentences:
text: It has been proposed that carotenoids are used in ornamental traits (for extreme examples see puffin birds) because, given their physiological and chemical properties, they can be used as visible indicators of individual health, and hence are used by animals when selecting potential mates.