Mason bees are small, solitary bees known for their efficient pollination. Unlike honeybees, they do not live in colonies but prefer to nest in small cavities, such as hollow stems or holes in wood. They are named for their unique behavior of using mud to construct their nests, sealing off individual cells where they lay their eggs. These bees are typically active in early spring and are crucial for the pollination of many plants, including fruit trees and flowers. Mason bees are gentle and rarely sting, making them a great addition to gardens and landscapes, promoting biodiversity and healthy ecosystems.