This allows it to use less energy than expected for thermoregulation at low temperatures.
"Metabolic Adaptation to Climate and Distribution of the Raccoon Procyon Lotor and Other Procyonidae" by John N. Mugaas
Nevertheless most of the lizards' movements were motivated by thermoregulation.
"Life History and Ecology of the Five-lined Skink, Eumeces fasciatus" by Henry S. Fitch
Parental care and the development of thermoregulation in red junglefowl.
Post-hatching parental care behaviour and hormonal status in a precocial bird