Table 1.

Conditional model summary from the averaged mixed effect linear regression used to predict kilojoules (kJ) expended during a prey capture attempt. Input variables were year (2017 and 2018), sex (male and female), dive type (pursuit or plunge) and mass. The interaction between sex and dive type was also included. Dive type (plunge) and sex (female) were absorbed into the intercept.

dive energetics model	coefficient	s.e.	adjusted s.e.	z-value	p-value
intercept	−1.334	1.485	1.487	0.898	0.369
type (pursuit)	0.537	0.0429	0.0429	12.517	<0.001
year (2018)	0.915	0.303	0.303	3.020	<0.01
mass	0.167	0.782	0.783	0.214	0.8306
sex (male)	−0.0823	0.375	0.375	0.219	0.8264