PC 1 PC 2 PC 3
Eigenvalue 7.070 1.266 1.087
% variance explained 58.913 10.552 9.061
Incubation (days) 0.886 -0.197 -0.035
Age at fledging (days) 0.886 -0.116 0.012
Mean age at sexual maturity (days) 0.792 -0.354 0.001
Adult structural size 0.766 0.287 0.215
Female adult body mass (g) 0.813 0.326 -0.010
Maximal lifespan (years) 0.779 -0.365 0.159
Post-hatching growth rate (KG) -0.688 -0.152 -0.091
Embryonic growth rate (g/day) 0.723 0.427 -0.086
Clutch size -0.532 0.702 0.189
Egg mass (g) 0.924 0.119 -0.150
Hatching mass (g) 0.920 0.245 -0.141
Post-fledging parental care (days) 0.114 -0.067 0.966