Chiff-chaff (image) Cell Press Share Print E-Mail Caption This is a photo of a chiff-chaff (Phylloscopus collybita). Credit Thomas Alerstam Usage Restrictions Credit Required. 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.