Table 3. Density of Ovenbirds (males per hectare) in BCR 6 in the province of Saskatchewan. Data are stratified by MODIS habitat class reclassified into 17 major types. “Mean Count” is the estimated mean number of males detected by a 10 minute unlimited distance point count within the habitat. “Density PIF” is the density estimate generated by dividing the mean count by the area sampled assuming a detection radius of 200m. “Density EDR” is the density estimate generated when our estimates of effective detection radius are used, based on distance sampling with a binomial half-normal estimator. The three main results are accompanied by the estimated 95% confidence intervals.

Habitat Mean Count Lower95 Upper95 Density PIF Lower95 Upper95 Density EDR Lower95 Upper95
Closed Conifer 0.636 0.521 0.752 0.051 0.041 0.060 0.294 0.241 0.347
Closed Deciduous 1.637 0.900 2.374 0.130 0.072 0.189 0.757 0.416 1.097
Closed Mature Mixed 1.577 1.409 1.746 0.126 0.112 0.139 0.729 0.651 0.807
Closed Young Mixed 1.469 1.234 1.704 0.117 0.098 0.136 0.679 0.570 0.787
Closed Decid. Mixed 2.181 1.887 2.474 0.174 0.150 0.197 1.008 0.872 1.143
Open Conifer 0.741 0.649 0.834 0.059 0.052 0.066 0.343 0.300 0.385
Sparse Conifer 0.325 0.195 0.455 0.026 0.016 0.036 0.150 0.090 0.210
Sparse Conifer Shield 0.772 0.554 0.989 0.061 0.044 0.079 0.357 0.256 0.457
Poorly Drained 0.684 0.341 1.027 0.054 0.027 0.082 0.316 0.157 0.474
Open Mature Decid. 1.757 1.578 1.936 0.140 0.126 0.154 0.812 0.729 0.895
Open Young Decid. 0.855 0.743 0.966 0.068 0.059 0.077 0.395 0.344 0.447
Open Mixed 1.940 1.408 2.471 0.154 0.112 0.197 0.896 0.651 1.142
Open Young Mixed 0.735 0.599 0.872 0.059 0.048 0.069 0.340 0.277 0.403
Open Herb/Grass 0.934 0.791 1.077 0.074 0.063 0.086 0.432 0.365 0.498
Open Northern 0.616 0.390 0.841 0.049 0.031 0.067 0.285 0.180 0.389
Mixed Forest/ Crop 0.302 0.275 0.328 0.024 0.022 0.026 0.139 0.127 0.152
Burns 0.107 -0.053 0.267 0.009 -0.004 0.021 0.049 -0.024 0.123