The green malkoha or whistling yellowbill (Ceuthmochares australis) is a species of cuckoo in the Cuculidae family. This species and the blue malkoha were previously considered conspecific and together known as the yellowbill. It has a green tail, wings and back. It has a widespread distribution down the coast of Eastern Africa from Kenya to South Africa. It ranges from dense forest to riverine forest and forest edges. In the forest it typically lives in the subcanopy at between 8–30 m.