Table 1. Effect of distance from natural vegetation (natural log of km) on bird reporting rate in suburban gardens analyzed by generalized linear models (error structure = quasi-binomial; link function = logit). Values are on the logit scale. * = factors significant at the p < 0.05 level.

Dependent Variable Coefficient Estimate Std. Error t-value Pr(>|t|)
Malachite Sunbird (Nectarinia famosa) reporting rate Intercept -3.3570 0.4596 -7.303 < 0.0001
Distance from natural vegetation -0.8566 0.2213 -3.870 0.0004*
           
Southern Double-collared Sunbird (Cinnyris chalybea) reporting rate Intercept -0.5685 0.1924 -2.954 0.00502
Distance from natural vegetation -0.3052 0.1501 -2.033 0.04812*
           
Orange-breasted Sunbird (Anthobaphes violacea) reporting rate Intercept -4.3433 0.5741 -7.566 < 0.0001
Distance from natural vegetation -0.1596 0.3946 -0.404 0.688
           
Sugarbird (Promerops cafer) reporting rate Intercept -5.0397 0.5946 -8.476 < 0.0001
Distance from natural vegetation -0.4656 0.3060 -1.522 0.135