AIC_c model selection results where acoustic and human activity variables were used to explain whether or not individuals were responsive during scan samples.

<p>Covariates (distance to road, distance to cover, dispersion, herd size, species, Julian date, time of day) and a random effect (Herd ID) were also included in each model.</p>a<p>The top 9 models (out of 33) that fell within 4 AIC_c of the top model (holding 67% of the total model weight) are presented.</p>b<p>Parameter count for the model (including intercept and variance).