Red-crowned cranes are large water birds. They are named for the distinctive red patch of bare skin on their heads. The birds live predominantly in eastern Asia, including Japan, Russia and China. Their habitat of choice are areas close to water such as wetlands, rivers and mudflats. The cranes mainly eat aquatic animals such as freshwater crabs, fish, frogs and snails as well as insects and other birds. The birds are threatened by habitat loss, while their eggs and chicks may be preyed upon by animals such as foxes. They are well known for their courtship dances and live in large family flocks. The Japanese rever the cranes and believe they grnat favours in return for sacrifice.