Raven (IMAGE) Max-Planck-Gesellschaft Caption Ravens (Corvus corax) have been observed to use their beaks similar to hands to show and offer objects such as moss, stones and twigs to each other. Credit Accipiter (R. Altenkamp, Berlin) Usage Restrictions None 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.