Unstardardized parameters and t-tests of the General Linear Models evaluating the effects of age, sex and subspecies/population on the various biometrics.

<p># – P = 0.059; *** – P<0.001; ** – P<0.01; * – P<0.05; ns – non-significant.</p><p>Fat and muscle scores were included as covariates in the model analysing body mass. The parameters represent the difference relative to adults, males and <i>E. s. witherbyi</i>. Models with significant interactions are presented in the main text.