Power lines and wind turbine in Portugal (IMAGE) University of East Anglia Caption Power lines and wind turbine in Portugal, the energy landscape that the birds encounter. Credit Jethro Gauld Usage Restrictions Only to be used in relation this this press release 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.