Cuculus poliocephalus Latham, 1790 - Lesser Cuckoo
This is also known as the Small Cuckoo.
Includes here dicruroides ('Fork-tailed Drongo Cuckoo'), which is sometimes treated as separate from lugubris, with the latter sensu stricto becoming 'Square-tailed Drongo Cuckoo' (BLI, eBird, IOC).