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Jacot, Alain; Romero-Diaz, Cristina; Tschirren, Barbara; Richner, Heinz; Fitze, Patrick S. (2010). Dissecting Carotenoid from Structural Components of Carotenoid-Based Coloration: A Field Experiment with Great Tits (Parus major). The American naturalist, 176(1), pp. 55-62. Chicago, Ill.: University of Chicago Press 10.1086/653000
