Table 4.

Pairwise contrasts of SourceTracker predicted proportional source contributions to eggshell microbiota using Dunn’s z statistic

	Cloacal gut	Brood patch skin	Feather	Nest material
Brood patch skin	−6.48 (<0.001)
Feather	−6.32 (<0.001)	0.16 (0.48)
Nest material	−7.70 (<0.001)	−1.22 (0.14)	−1.38 (0.12)
Surface soil	0.002 (0.50)	6.49 (<0.001)	6.32 (<0.001)	7.71 (<0.001)

Dunn’s z for pairwise contrasts (FDR q value; bold = q < 0.1)

Kruskal–Wallis χ² (adjusted for ties) = 114.51, df = 4, P < 0.001