Just one noticed at pond edge.
Urban garden, aerial net
Observed gnawing on the remnants of wood in a hole-in-the-ground style fire pit. Then, seemed to gather up a tiny ball of mud from the base of the pit before flying off.
Sceliphron is a genus of Hymenoptera of the Sphecidae family of wasps, commonly referred to as mud daubers. They are solitary and build nests made of mud. Nests are frequently constructed in shaded niches, often just inside of windows or vent openings, and it may take a female only a day to construct a cell requiring dozens of trips carrying mud. Females will add new cells one by one to the nest after each cell is...