Fig. 8
From: Volatiles of symbiotic bacterial origin explain ectoparasitism and fledging success of hoopoes
Statistically significant partial associations between fledging success (dependent variable) and Principal-Components (PC) scores summarizing relative abundances of detected bacteria (green dots) in the nest material (PC3_BM2) and in the secretion of nestlings (PC1-BSN2 and PC5-BSN2) at the late stage of the nestling period; and between fledgling success and relative abundance of detected volatiles (blue dots) of the secretion of 8 days old nestlings (PC1-VS1, PC2-VS1, PC3-VS1). Lines are regression lines