There are around 550 different bee species in Germany. Most of them are solitary bees. They don’t live in large beehives like the honeybee, but each female bee often builds multiple nests and feeds her offspring alone. Solitary bees use their short lifespan of a few weeks exclusively to reproduce and to provide food for their brood to develop into adult bees. Bees depend on the availability of pollen which they can frequently collect on specific plant species only.