Beloved as a herald of spring, cuckoos have held a place in our hearts for centuries. But for many other birds the cuckoo is a signal of doom, for it is nature's most notorious cheat. In this enormously engaging book, naturalist and scientist Nick Davies reveals how cuckoos deceive other species, uncovering an evolutionary race between cuckoos and the hosts. Cuckoo offers a new insight not only into the secret lives of these extraordinary birds, but also how cheating evolves and thrives in the natural world.