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Carotenoid-rich mouth colors influence the conspicuousness of nestling birds
2009
Behavioral Ecology and Sociobiology
When allocating investment among offspring, parents might maximize their fitness by biasing investment toward offspring with the best direct fitness prospects. The observed preferences of avian parents for carotenoid-rich mouth colors that advertise good condition has been interpreted as support for this hypothesis. However, because these condition-dependent visual signals might also make offspring more visually conspicuous, active parental preferences for carotenoid-rich traits are difficult
doi:10.1007/s00265-009-0861-z
fatcat:r77pbqxy5nb37p5kkvzfhchuba