Mallow bee building nest
A Ptilothrix bee begins to build her nest by wetting hard mud and digging with jaws and legs. Off she goes to get more water for softening the soil. She regurgitates water to moisten the soil and work it into a turret for her nest. Beneath the earth, water is mixed with soil and mud pellets are removed to enlarge the gallery. Then off she goes to visit mallow blossoms for nectar and pollen. She returns to her nest with provisions to sustain her brood as they grow and develop underground.