Identifying Digger Bees The presence of small holes in dry, bare ground is a sign of digger bees. Holes are about the diameter of a number two pencil and may be surrounded by small mounds of soil ...

Also known as mining bees and digger bees and often confused with honeybees, ground bees are a species that become active in early spring, creating several holes in well-drained soil to serve as ...

The mason bee, Osmia (Megachilidae), which may be metallic green or blue, uses mud to make chambers for her eggs in preexisting cavities like hollow stems. Digger bees dig their nests in bare soil.