Table 4 Distribution of sample sizes and sampling dates from across the three diet regimes.

Capture number	Month/Year	Supplementary feed	Mean NDVI	Diet regime	Number of fecal samples
1	February 2014	None	0.64	Green vegetation	25
2	June 2014	None	0.40	Restricted	30
3	August 2014	None	0.29	Restricted	30
4	October 2014	None	0.28	Restricted	28
5	December 2014	Started introducing feed	0.25	Restricted	31
6	February 2015	Fed	0.47	Hay	22
7	June 2015	Fed	0.32	Hay	37
8	August 2015	Fed	0.27	Hay	31
9	December 2015	Fed	0.25	Hay	37
10	February 2016	Fed	0.25	Hay	32
11	June 2016	Reduced feed	0.25	Restricted	20
12	August 2016	Reduced feed	0.24	Restricted	36
13	October 2016	Reduced feed	0.23	Restricted	30
14	December 2016	None	0.21	Green vegetation (224.6 mm rainfall, not reflected in NDVI)	22
15	February 2017	None	0.70	Green vegetation	15

Each individual was sampled only once at each capture period. All samples were used for alpha and beta diversity analysis and envfit analysis. Only samples that were accompanied by complete covariate datasets were included in the CCA. Normalized difference vegetation index (NDVI) was summarized as mean NDVI values for the MODIS pixels overlapping the boma during the time period most closely preceding the capture. Dietary regime was classified as “restricted” if NDVI was <0.5 and little or no supplementary feed was provided, with the exception of December 2016, which had exceptionally high rainfall and abundant new vegetation growth that was not reflected in NDVI measurements. Dietary regime was classified as “hay” if abundant supplementary feed was provided (see the “Methods” section) and as green vegetation otherwise.

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