Burger, A. L., Hartig, J., Dierkes, P. W. 2020. Shedding light into the dark: Age and light shape nocturnal activity and sleep behaviour of giraffe. Applied Animal Behaviour Science 229, 105012.
The interaction of internal clocks and environmental conditions determines the daily behavioural rhythm of an animal. Due to the strong influence of light, these circadian rhythms oscillate in mammals over a cycle length of about...