My name is Dr Margriet Dogterom and am the founder and owner of Beediverse. I write this blog for all who love bees and who want to learn more about these wonderful creatures.
This photo shows two nesting tunnels (half of two nesting tunnels) containing two cocoons inside their mud cavities.
When nesting trays are not completely snapped togethr, a gap is present and lets air into the nesting tunnel. Consequently the mason bees muds over the gap forming a super – wall.