Fig. 5

Box and whisker plots of PC1 and PC2 scores derived for each species from relative abundances of passerine uropygial gland bacterial amplicon sequence variants (ASVs) indicating variation between spring and fall migration. Midline indicates median values, whiskers indicate minimum and maximum values. Asterisks denote significant differences at α = 0.05. See Table S3 for ANOVA output. Species photos courtesy of Brock and Sherri Fenton and used with permission. A version of this figure presented as PC biplots is available in the supplementary material (Fig. S5)