Figure 3From: Uropygial gland size and composition varies according to experimentally modified microbiome in Great titsEffects of experimental modifications of Great tit microbiome on the composition of uropygial gland secretion. PC1 in both sexes (a), PC2 in females (b) and PC2 in males (c) were presented. The compounds produced and their contributions to the principal components are given in Table 1.Back to article page