The Javan kingfisher (Halcyon cyanoventris) is a medium-sized kingfisher species in the family Alcedinidae. It is a resident breeder in the lowlands of Java and Bali in Indonesia. The Javan kingfisher is a striking bird with a bright blue head and back, and a white . It has a long, pointed bill and a distinctive crest on its head.
The Javan kingfisher is an important part of the Indonesian ecosystem. It helps to control the population of insects and small reptiles. The Javan kingfisher is also a popular tourist attraction, and its distinctive call can be heard throughout the lowlands of Java and Bali.