Extended Data Fig. 2. Microbiota composition at the phylum rank for the proventricular and cloacal microbiomes of Cory’s shearwaters and northern fulmars.

The phyla within each sample (n = 169 samples obtained from 85 individual seabirds) are plotted by their relative abundance on the y-axis. Low-abundance phyla (prevalence < 0.1 and abundance < 10) are grouped together and labelled as “Other”.