Carotenoid Plasma Concentration, Immune Profile, and Plumage Ornamentation of Male Barn Swallows (Hirundo rustica)

Carotenoids exert immunomodulating, immunostimulating, and antioxidant actions in mammals and are major determinants of coloration in animals. Honest advertisement models of sexual selection propose that male ornaments, including coloration, are reliable indicators of male quality. Because of their...

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