Hummingbird Oscillates Back and Forth (video) University of British Columbia Share Print E-Mail Loading video... Caption A tube containing sugar water is placed in front of an LCD computer monitor with a looming black-and-white spiral pattern (clockwise rotation). The feeding bird oscillates back and forth at the feeder. Credit University of British Columbia Usage Restrictions None 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.