Digital Brain Reconstructions (IMAGE) University of Texas at Austin Caption A digital brain reconstruction of the recently extinct elephant bird revealed that its optic lobes were virtually absent, a trait it shares with the closely-related kiwi and which indicates that it was nocturnal and possibly blind. This is in contrast to the distantly related tinamous, which is active during the day and can see. Credit C. Torres for The University of Texas at Austin. Usage Restrictions Include credit 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.