Fig. 6From: Experimental determination of three-dimensional cervical joint mobility in the avian neckPlots of two degree of freedom ROM. Poses reached by the joint are plotted with black circles. a. Lateroflexion versus dorsoventral flexion. b. Lateroflexion versus axial rotation. Stippling indicates unmeasured poses that are hypothesized to be reachable. Ticks are set 20Â deg. apart. Sample size in frames is indicated along the bottomBack to article page