Fig. 4
From: Volatiles of symbiotic bacterial origin explain ectoparasitism and fledging success of hoopoes
Principal coordinate analyses of the bacterial communities of experimental (red) and control (blue) nest materials of hoopoe nest-boxes. Samples collected at the beginning of the nestling stage were based in Aitchison (A) and PhilR distance (B). Similarly, samples collected at the end of the nestling stage were based in Aitchison (C) and PhilR distance (D). (B and D)