Fig. 3: Effect size estimates of correlations between age class (1- vs. 2+-year-old), social status (subordinate vs. dominant), body condition and territory quality and the chromatic (PC1, PC2) and achromatic (L) components of the colour phenotype of male purple-crowned fairy-wrens.

Circle area depicts whether variation in PCs and L across the range of realistic values of the predictors is between 0 and 1 jnd (i.e. not discriminable by conspecifics), between 1 and 2 jnd, or larger than 2 jnd, and error bars the 95% confidence intervals. Asterisks depict significant correlations after FDR procedure.