View of the Recording Unit on Top of the Hawk (image) Acoustical Society of America Share Print E-Mail Caption This is a view of the recording unit on top of the hawk. The unit is custom made and includes a high-definition camera and ultrasonic recording microphone. Credit Laura Kloepper Usage Restrictions This image may be used only with appropriate credit. Share Print E-Mail 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.