These are solitary bees that do not live in colonies. Adults are queens or males. Andrenid (a solitary hairy-bodied burrowing short-tongued bee) bee burrows are made in the ground, usually consisting of a long vertical tunnel with lateral branches off of this tunnel to each cell. Sometimes large numbers of these bees will nest close together, particularly in bare-ground areas. They provision each cell with pollen and nectar. Both sexes overwinter in the nests.
Colletid (family of bees referred to collectively as plasterer bees or polyester bees, due to the method of smoothing the walls of their nests cells with secretions applied with their mouth parts) bees nest in various natural cavities or in the ground. Their burrow often consists of a straight tunnel with several short branches at its end containing multiple cells. Cells are provisioned with a mixture of pollen and nectar.
Halictid bees resemble andrenids in nesting habits. Sometimes large numbers of nest close together, often sharing the same tunnel to the outside. Developmental time can be about 2 weeks. Sweat bees are sometimes a nuisance when they are attracted to perspiration as a moisture source. They can give a mild sting, especially when being brushed away.