Fig. 6

Relative incidences of changes in head- and body heading in 6 oryx during a mean of 5.15 h (SD 0.15) of routine movement per individual. (A) According to whether; only the heading of the head changed (pink), only the heading of the body changed (grey) or changes in the head heading preceded a change in body heading (black) [total number of instances given in brackets, and the number of heading changes per hour given in white text]. (B) Details of changes in body heading without changes in head heading (whether anticlockwise or clockwise [to the left or right] of the heading adopted by the body), changes in head heading (whether to the left or right of the body heading) and, in the case of changes in head heading followed by changes in body heading, their relation to the subsequent changes in body heading (whether left or right) for individual oryx. Note the roughly equal number of left and right heading changes for both bodies and heads, whether linked or not, but that the incidence of cis-head followed by changes in body heading (head heading moved left of the body heading before the body heading moved left or the head heading moved to the right of the body heading before the body heading moved right) greatly exceeded the reverse situation