Some people describe them as a football shape. Mud Dauber Nest: True to their name, mud dauber wasps construct their home out ...

The female mud-dauber wasps use the mud balls to build their nests. Collecting them into clusters, they then carve chambers inside the balls into which the females lay their eggs. Before closing each ...

"In this study, the nests are made by Sceliphron, which are wasps of the family Sphecidae, superfamily Apoidea. "These are well-known mud-daubers in much of the warmer parts of the world.