Time course of mean cloacal and skin temperatures of the three birds (a, b, and c). At time 0 min, then every 3 min,
the bird was handled by the experimenter
to take body temperatures. It can be seen that after the first handling, core temperatures started to rise while skin temperatures dropped,
a sign of skin vasoconstriction. The skin vasodilated again when mean core temperature reached a plateau. Lines above or below two or more points (x–x) indicate nonsignificant
difference (repeated measures ANOVA and Fisher post hoc test). In (b), * indicates significantly different from mean result at time 18 min; † indicates
significantly different from mean result at time 15 min.