Table 4.

Barn swallow parent vs. offspring similarity.

	Father vs. offspring similarity				Mother vs. offspring similarity
	Observed diff.	95% CI range	p	Cliff’s d	Observed diff.	95% CI range	p	Cliff’s d
OTUs: weighted UniFrac	-0.004	-0.017~0.017	0.631	-0.016	0.026	-0.022~0.022	0.031	0.148
OTUs: unweighted UniFrac	0.01	-0.016~0.016	0.188	0.074	-0.005	-0.024~0.024	0.616	-0.038
OTUs: Bray–Curtis	-0.005	-0.016~0.018	0.639	-0.022	0.052	-0.028~0.034	0.013	0.171
OTUs: Jaccard	0.006	-0.01~0.01	0.194	0.079	0.002	-0.013~0.013	0.4	0.035
KEGGs: Bray–Curtis	0.005	-0.019~0.018	0.328	0.003	-0.007	-0.017~0.017	0.724	-0.104

Results of permutation-based tests comparing dissimilarity among parental vs. offspring FM composition. Analyses were run separately for offspring vs. mother and offspring vs. father pairs. For OTU data, analyses were run on four dissimilarity index types (weighted and unweighted UniFrac, Bray–Curtis and Jaccard). Only Bray–Curtis dissimilarity was used for predicted KEGG categories. Shown are observed value dissimilarity differences, 95% confidence intervals of permutation-based null distribution, permutation-based probability values and estimates of effect size (Cliff’s d). Significant results are in boldface.