Fig. 6. Influence of methodology on the normoxic (black lines) and hypoxic (grey lines) thermoregulatory responses of bearded dragons. A, B and C show the average change in T_b over the 7.5h of measurements (starting at 0h) in the ramping shuttle box, extreme shuttle box and thermal gradient trials, respectively. D, E and F show the corresponding average frequency histograms (expressed as per cent of observations) for lizards in the ramping shuttle box, extreme shuttle box and thermal gradient trials, respectively.