Pigeon Syrinx Making Sound (VIDEO) University of Southern Denmark This video is under embargo. Please login to access this video. Caption This is a high-speed video of syringeal kinematics during sound production in the domestic pigeon. The first part of the video is imaged under incident lighting, followed by trans-illumination, which clearly reveals the inner contours of lateral vibratory mass (LVM) motion. Recorded at 4000 frames s-1 and slowed 133 times. The extracted LVM inner contours were superimposed upon the individual images (right, green; left, red). Credit Coen Elemans/SDU Usage Restrictions with credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.