TABLE 1.

Diversity indices for bacterial communities in individual hoatzin crops

Animal	No. of sequences	No. of OTUs	% of OTUs unique to one bird	Shannon diversity indexa	Simpson diversity indexb	Pielou's evenness indexc	Good's coverage index (%)d
1	332	183	60	4.72	0.013	0.91	65
2	189	120	60	4.49	0.013	0.94	52
3	191	125	57	4.36	0.023	0.90	52
4	179	125	67	4.51	0.013	0.93	44
5	166	76	71	3.59	0.061	0.83	66
6	178	116	65	4.34	0.016	0.91	51
All	1,235	580	65	5.79	0.006	0.91	67

^aThe Shannon diversity index takes into account the number and evenness of species. A higher Shannon-Weaver diversity index is associated with greater diversity (2, 45).

^bThe Simpson diversity index estimates the probability that two randomly selected individuals belong to the same species (46).

^cPielou's evenness index is a measure of how evenly distributed abundance is among the species that are in a community (39) and ranges from 0 to 1 (eveness to uneveness).

^dGood's coverage index is the sum of the probabilities of the observed classes calculated as follows: [1 − (n/N)] × 100, where n is the number of singleton sequences and N is the total number of sequences (12).