Time of first movement from the sleeping tree (hours relative to sunrise).

<p>Boxplots: median and interquartile range (IQR); whiskers indicate extreme values unless there are data points more than 1.5*IQR below the lower quartile or more than 1.5*IQR above the upper quartile, in which case whiskers stop at the first data points within those boundaries and open circles indicate more extreme points. n = number of observations.</p>