Fig. 5. Microbial famillies that differ by abundance or prevalence with bird age.

Differently prevalent (A) and abundant (B) microbial families by age. Only prokaryotes are considered in (A), and only those families that are differentially prevalent and/or abundant by age are shown. In (A), the horizontal (x) axis indicates prevalence (in percentages). In B, the horizontal (x) axis indicates abundance (in log2 count numbers). For both plots, numbers in bold represent the odds ratios, surrounded by 95% lower and upper confidence intervals. Asterisks indicate statistically significant differences. The colours of the bars indicate the age of the birds.