Songbird (image) Colorado State University Share Print E-Mail Caption "Massive numbers of birds migrate on some nights, and at other times, not at all," said Horton. "As scientists, we want to be more mindful about how best to protect migrating birds." Credit Kyle Horton/CSU 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.