TableĀ 3.

Cumulative model weights for each predictor variable in the five-parameter (N = 193 species) and three-parameter (N = 289 species) datasets, calculated by summing Akaike model weights for all models that included the variable of interest, following Arnold [40]. PGLS, phylogenetic generalized linear model; regression, conventional (non-phylogenetically corrected) linear regression.

five-parameter (N = 193)three-parameter (N = 289)
relative flight muscle size0.9660.9960.930.999
wing loading0.8940.691n.a.n.a.
heart index0.8340.3020.990.27
body mass0.6570.9990.060.999
hand-wing index0.0020.742n.a.n.a.