Cellophane Bees!

I spent some time watching dozens of very active Cellophane bees digging holes in the sandy soil. They are important pollinators and are neither aggressive nor defensive.

Close-up of a nest with sand piled up around the entry hole.

10 nest piles are visible in the photo.

Dozens, if not hundreds of bees were flying just above ground level.

Underground cells are lined with a clear "cellophane-like" material that the female bees produce to line the cells containing eggs/larvae. The lining keeps the cells waterproof.

Resting in the sunshine!

Peeking into the hole. Another bee is close to the surface, looking out.

Spring is the time when adults are active. They have a short adult life span of about one month. Females emerge in the spring when they collect pollen. They will lay an egg on or near a mix of pollen and nectar and the developing bee will emerge the following spring.

https://extension.umd.edu/resource/meet-pollinator-cellophane-bee/