The Brush Cuckoo, Cacomantis variolosus, is a member of the cuckoo order of birds, the Cuculiformes, which also includes the roadrunners, the anis, and the Hoatzin.
The Chestnut-breasted Cuckoo (Cacomantis castaneiventris) is a species of cuckoo in the Cuculidae family. It is found in Australia, Indonesia, and Papua New Guinea. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical mangrove forests.
The Asian Koel (Eudynamys scolopacea, formerly also "Common Koel"), is a member of the cuckoo order of birds, the Cuculiformes, which also includes such birds as the roadrunners, the anis, and couas. It is found from southern Asia, China, and into Australia. Like many cuckoos, it lays its eggs in other birds' nests.
The Oriental CuckooCuculus saturatus is a species of cuckoo found in South Asia. It breeds in northern Eurasia and the Himalayas, migrating to southeast Asia and the Greater Sunda Islands (where resident races also occur) for the winter.
Birds of Australia 
not too much longer now :)