Eggshells in the sand (IMAGE) University of Colorado at Boulder Caption Surface scatter of Aepyornis eggshell exposed by active wind erosion of sand dunes in which the birds nested. Credit Gifford Miller Usage Restrictions None with credit 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.