Bees line their nests with things like hard-packed soil, bits of cut leaves and masticated flower petals. One genus of ground nesting bee is known as "cellophane bees" for the clear, waterproof stuff they paint onto the walls of their nests.
"You could think of solitary bees as hard-working single moms, working nonstop from sun-up to sun-down to provide pollen and nectar, in the form of little loaves, that they provide for their young,"
