Figure 3

Unifrac clustering analysis of bacterial assemblages in the cloacae of adult and chick black-legged kittiwakes. Adults are represented by the dark grey box and chicks by the light grey box. Each leaf represents the bacterial assemblage of one individual kittiwake. Nodes with numbers were recovered more than 95% of the time during 100 permutations. Note that the analysis removed several chick individuals that harboured fewer than five OTUs (see Methods).