Reed Nesting Holes (IMAGE) University of Würzburg Caption These are reed nesting holes for solitary bees. A certain sign of nesting is seeing the ends of the reed tubes capped with mud. Credit Photo: Mariela Schenk 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.