Skipper Butterfly (IMAGE) University of Pennsylvania Caption The researchers noticed that the white patches on the wings of skipper butterflies looked very different, depending on the angle at which they were observed. Credit Daniel Janzen Usage Restrictions With permission 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.