Results
Relationship between body size and life history traits
We found a significant positive relationship between body mass and maximum longevity, female maturity, incubation time and fledgling age, and a significant negative relationship between body mass and litter/clutch size (Fig. S1). This suggests that body size in our species represents a useful umbrella trait which captures information on their life histories, and thus is a trait which could influence the rate of population declines due to the extinction vortex.
GLMM/LMMs