Table 3:

Results of post-hoc analyses for the interaction between sex and treatment for the difference in oxalate between Day 13 and Day 15

	Estimate	SE	DF	t-Value	Lower CI	Upper CI	P-value
♀ dark	1.12	7.46	84	0.15	−13.72	15.97	0.8808
♂ dark	−10.80	7.81	84	−1.38	−26.33	4.74	0.1706
♀ light	−6.87	7.63	84	−0.9	−22.05	8.31	0.3705
♂ light	15.34	7.63	84	2.01	0.16	30.52	0.0476

Tukey HSD tests were used for post-hoc analyses (lmerTest package Kuznetsova et al., 2016). Estimates give the difference between oxalate from Day 13 to Day 15 as a % from baseline (Day 13) and P values indicate whether this differs from 0. Sample sizes: ♀ dark = 23; ♂ dark = 21; ♀ light = 22; ♂ light = 22 nestlings. In bold the significant P-value (P< 0.05) is indicated. Standard error (SE) and confidence interval (CI) of the estimates are given. See Fig. 2 for the raw data of the change in oxalate.