Table 1.

Comparison of candidate models of CORT levels based on deviance information criterion (DIC). (Baseline and peak CORT are simultaneously modelled in a multi-response Bayesian phylogenetic mixed model. Variables included as predictors in the models are level (i.e. baseline versus peak CORT), life-history stage (LHS), log body mass (mass), absolute distance from equator (latitude), brood value (BV) and residual brain mass (brain).)

model no.	fixed effects in the model	DIC	ΔDIC
1	level + LHS + BV + mass + latitude + brain + brain × level + brain × LHS	1940.36	0.00
2	level + LHS + BV + mass + latitude + brain + brain × level + brain × LHS + brain × level × LHS	1940.54	0.18
3	level + LHS + BV + mass + latitude + brain + brain × LHS	1940.91	0.54
4	level + LHS	1948.68	8.32
5	level + LHS + BV + mass + latitude	1950.16	9.80
6	level + LHS + BV + mass + latitude + brain + brain × level	1951.87	11.50
7	level + LHS + BV + mass + latitude + brain	1952.73	12.37