Table 1.

Model selection to explain timing of laying (Julian laying date) variability in little penguins, using the factor year to prevent from inter-annual effects and highlight inter-individual effects of winter (July) body mass (BM). (The best fit model (italics) was determined according to the lowest Akaike's information criterion (AIC), supported by Akaike weights (ω). k is the number of parameters in the model. ED stands for explained deviance, i.e. the ratio of deviance explained by the model relative to the null model.)

males
BM	year	BM : year	AICc	ΔAIC	ω	k	ED (%)
+	+		5245.7	0	0.74	7	10
	+		5248.6	2.91	0.17	6	10
+	+	+	5249.9	4.21	0.09	13	10
+			5801.2	555.5	0	1	0.1
			5811.2	565.5	0	0

females
BM	year	BM : year	AIC	ΔAIC	ω	k	ED (%)
+	+	+	4198.2	0	1	13	11
	+		4232.3	34.1	0	6	11
+	+		4233.9	35.7	0	7	10
+			4677.7	479.5	0	1	0.1
			4689.5	490.3	0	0