Non-honey bees

Some solitary bees leave their nests open when they go foraging, but others cover the entrance before leaving. Grey-backed mining bee, Andrena vaga, not only covers the nest but also sometimes digs a false nest entrance a few centimeters away and leaves it open. It is a way to deceive its nest parasites which would like to lay their eggs in her nest. Sometimes not only cuckoo bee is fooled by this false nest, but also the returning mining bee itself flies straight to it, before realizing its mistake.