To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2 Head-bobbing by a diving common loon. The loon was filmed in a rehabilitation pool at the Tufts Wildlife Clinic. Footage was recorded at 200fps and is played back at 30fps, appearing 6.7 times slower than real life. Foot-propelled swimming kinematics and turning strategies in common loons Glenna T. Clifton, and Andrew A. Biewener Journal of Experimental Biology 2018. 221:None-None; doi: 10.1242/jeb.168831 Download Original Video