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Bacterial composition of bird gut samples. (A) Relative abundance of bacterial phyla in all birds. Bird orders shown in gray boxes and individuals are labeled across the top. (B) Bacterial phyla summarized by bird order, including the individuals in this study and *indicates data obtained from Waite and Taylor (2014). Phylogeny on left is a modified version of the phylogenetic relationship of bird orders from Hackett et al. (2008).
