Table 3. Coefficients (Mean, SD, and 2.5th and 97.5th percentiles) of the variables included in the models of the probability of detecting the Grey Fantail on a visit to a site, as a function of traffic noise (Models 1 and 3) and traffic volume (Model 2), with the deviance information criterion (DIC) and receiver-operating characteristic curve (AUC) values for models 1 and 2. Models 1 and 2 include data from all 58 study sites, whereas Model 3 includes data from the 19 study sites in which traffic volume was < 200 vehicles/d.

Variable Mean SD 2.5% 97.5% DIC AUC
Model 1 Constant -0.971 0.536 -2.29 -0.209 102.3 0.72
Traffic noise -0.082 0.038 -0.18 -0.026
Model 2 Constant -0.952 0.546 -2.30 -0.171 106.1 0.66
Traffic volume -1.050 0.573 -2.40 -0.155
Model 3 Constant -0.066 0.472 -1.00 0.846
Traffic noise -0.208 0.082 -0.39 -0.068