Fig. 4.

Laterality Score of sleeping Aldabra tortoises on Mahè (under human care) and Curieuse (free ranging). Left-biased tortoises for the position of the head, or the limbs were assigned with a score of 1, tortoises with asymmetrical positions of the head or the limbs had a score of 2, right-biased tortoises for the position of the head or the limbs had a score of 3. The horizontal lines within the box indicate the medians, crosses indicate means, boundaries of the box indicate the first and third quartile. The whiskers extend up from the top of the box to the largest data element that is less than or equal to 1.5 times the interquartile range (IQR) and down from the bottom of the box to the smallest data element that is larger than 1.5 times the IQR. Values outside this range are considered outliers and are drawn as points