Oxidative physiology is weakly associated with pigmentation in birds (dataset)

The dataset contains individual level data: date of sample collection, species name, sex (female, male, unknown), oxidative physiological variables: total antioxidant status (TAS), uric acid (UA), malondialdehyde (MDA), total glutathione (tGSH), reactive oxygen metabolites (ROM) levels, plumage variables: irridescent plumage (0/1), eumelanin score (0-5), pheomelanin score (0-5), carotenoid score (0-5), beak carotenoid content (0/1), leg carotenoid content (0/1), first principal component values (PC1), second principal component values (PC2) diet species and sex-specific mass, and source of mass data