(B) Host	Individuals sampled	Number of sequences	Region sequenced	Number of phylotypes	Median sequence length (bp)	Shannon diversity	Shannon evenness	Simpson diversity	Figure 1B label
Turkey	38	910,992	~V3	60	160	1.27	0.17	0.48	Danzeisen, 2013
Duck	1	6742	V1–V3	105	481	1.73	0.24	0.33	Unno, 2010
Goose	1	7825	V1–V3	232	484	3.40	0.46	0.08	Unno, 2010
Chicken	1	6416	V1–V3	112	486	2.90	0.40	0.10	Unno, 2010
	32	74,678	V1–V2	20	515	1.60	0.22	0.30	Stanley, 2013
	3	16,990	~V2	24	195	0.56	0.08	0.72	PRJEB1467
	1	13,243	~V2	31	168	2.07	0.28	0.17	PRJNA193217
	1	22,384	~V3	204	154	3.37	0.46	0.08	PRJNA169064
Emu	4	96,549	~V2	39	219	1.44	0.20	0.34	Bennet, 2013
Kakapo	30	128,021	V3–V4	28	268	0.83	0.11	0.56	PRJNA222380
Little penguin	4	68,280	V2	53	188	0.86	0.12	0.56	PRJEB3384
King penguin	8	116,937	~V2	50	288	1.98	0.27	0.22	Dewar, 2013
Misc. penguins*	3	18,216	V1–V3	120	285	2.95	0.40	0.10	Dewar, 2013
Petrel/Prion	2	17,335	~V2	107	384	2.63	0.36	0.18	PRJEB1549

Asterisk (

^*) denotes a study that analyzed the bacterial communities associated with multiple species of birds, but with common phylogenetic or geographic grouping. (A) Data obtained from clone-library based studies and the published study that reported the sequences. (B) Data obtained from short-read studies. Note that phylotypes are used instead of OTUs due to differing gene regions being sequenced. Reported regions sequenced are only approximate and do not accurately reflect the start/stop positions of the amplicons. Ecological diversity estimators were calculated by rarefying phylotype table to 1500 phylotypes/sample prior to calculation and median values are reported. Shannon Evenness is calculated by dividing the Shannon Diversity by the maximum Shannon Diversity value for the depth of sampling. A value of 1 represents complete evenness.