Bones recovered from the birds. (IMAGE) Frontiers Caption Bones recovered from the birds. Image by Dr Mariana Nabais. Credit Dr Mariana Nabais. Usage Restrictions Image owned and provided by the authors and must be credited to them. License Original 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.