Solitary bees are a diverse group of bee species that do not live in colonies like honeybees. Instead, each female typically builds her own nest and raises her young independently. They can be found in various habitats, including gardens, meadows, and forests, and they play a crucial role in pollinating plants. Unlike social bees, solitary bees do not have a queen or worker bees. They often nest in small holes in wood, soil, or even in plant stems. Some common types of solitary bees include mason bees and leafcutter bees, both of which are important for maintaining healthy ecosystems.