Fig. 2.
Parameter spaces of Agamid lizards in active and sleep phases, derived from principal component analysis (with 95% confidence interval ellipses), inputted with perch characteristics (substrate type, perch height, perch angle, trunk girth, perch diameter, distance to trunk) and their use by individuals (head direction). PCAs for Psammophilus dorsalis, Sarada superba, and Sitana visiri are based on substrate type, perch height, perch angle, and head direction. Larger points/triangles denote centroids
