FIG 1.

Microbial community populations of eight gull fecal samples. The V4-V6 hypervariable regions of the 16S rRNA gene from fecal genomic DNA were amplified and pyrosequenced. Taxonomy was assigned to sequences using GAST, and taxonomic counts were normalized to the maximum number of sequences. Only the most abundant genera (≥1% of at least one sample) are presented. Fecal samples from gulls 1 to 4 were collected from Bradford Beach, Milwaukee, WI, on 20 December 2011 (gulls 1 and 2) and 5 January 2012 (gulls 3 and 4), and samples from gulls 5 to 9 were collected from Grant Park, South Milwaukee, WI, on 1 January 2012.