Estimated elevations of species’ density optima.

Elevations of density optima for southern and northern AWT populations of the 26 rainforest bird species identified as having a unimodal (Gaussian or skewed) temperature response, with optima at least 100 m from the gradient limits, which could be estimated using the approach in Oksanen et al. [22]. Species are shown in alphabetical order, with their optimum elevations and upper and lower 84% confidence intervals, as well as the estimated south/north difference in elevation of density optima (positive or negative). Species with a significant difference indicated by non-overlapping confidence intervals are shown in bold. E indicates endemic species, S indicates northern and southern populations have subspecific status.