Black Mud Wasp sealing her nest

Females build a series of one celled mud nests attached to plants, rock faces and buildings (in this instance my garden wall). More mud is then daubed over the entire nest. For a while now she has been collecting insects which are then paralyzed and placed in the nest where she lays her eggs. There is an egg and a paralyzed insect in each of the cells which serve to feed the young when they hatch.