Fig. 2

Effects of nestbox availability on light exposure and behaviour. A Daily light exposure (hrs) of animals across experimental conditions. B Key circadian entrainment parameters across experimental conditions. The combined nestbox and forage mix condition is referred to as ‘ + forage mix’ (A, B). C Daily locomotor activity profile of animals housed with a nestbox, calculated using the main cage PIR. D Daily light environment sampling profile. White and black bar shows timing of light and dark, respectively (C, D). All results reported as mean across mice and days, ± SEM. **** p < 0.001, ** p < 0.01, * p < 0.05, between condition comparisons