Malaysian hawk-cuckoo or Malay hawk-cuckoo (Chèo chẹo nhỏ, Hierococcyx fugax)
previously assigned as Cuculus fugax

The Malaysian hawk-cuckoo or Malay hawk-cuckoo (Hierococcyx fugax) is a bird in the family Cuculidae formerly considered conspecific with Hodgson's hawk-cuckoo and the rufous hawk-cuckoo. 

The bird is found in far southern Burma, southern Thailand, Malaya, Singapore, Borneo, Sumatra and western Java.

Cuculiformes, cuculidae: Latin cuculus cuckoo.
Hierococcyx Greek hierax hawk and kokkux cuckoo.
Fugax is a Latin word meaning "fleeting," "swift," or "transitory".