To Have Ultra Rapid Vision (video) Uppsala University Share Print E-Mail Loading video... Caption The video clip visualizes one advantage of the ultra rapid vision discovered in birds. The almost three times faster refreshment rate of visual input in a pied flycatcher than in a human makes it far easier to track and predict the flight paths of two blue bottle flies. This is most likely a crucial ability for a bird that catches its airborne prey on the wing. Credit Malin Thyselius Usage Restrictions May only be published in connection to reports about the study Ultra-rapid Vision in Birds, PLOS ONE. 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.