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Hodgson's hawk-cuckoo (Hierococcyx nisicolor, Chèo chẹo Hodgson)
also known as the whistling hawk-cuckoo

Hodgson's hawk-cuckoo (Hierococcyx nisicolor), also known as the whistling hawk-cuckoo is a species of cuckoo found in north-eastern India, Myanmar, southern China and southeast Asia.

Cuculiformes, cuculidae: Latin cuculus cuckoo.
Hierococcyx Greek hierax hawk and kokkux cuckoo.
nisicolor Latin nisus sparrowhawk; Latin color colour.

previously assigned as Cuculus sparverioides

The large hawk-cuckoo (Hierococcyx sparverioides, Chèo chẹo lớn) is a species of cuckoo in the family Cuculidae.
This bird species is found in Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Pakistan, the Philippines, Singapore, Taiwan, Thailand, and Vietnam.

Cuculiformes, cuculidae: Latin cuculus cuckoo.
Hierococcyx Greek hierax hawk and kokkux cuckoo.
sparverioides Latin sparverius sparrowhawk; Greek -oides: resembling.

Northern hawk-cuckoo, rufous hawk-cuckoo, or Horsfield's hawk-cuckoo (Chèo chẹo hung, Hierococcyx hyperythrus) 

The northern hawk-cuckoo, rufous hawk-cuckoo, or Horsfield's hawk-cuckoo (Hierococcyx hyperythrus) is a bird in the family Cuculidae.
The bird species is found in eastern China, North and South Korea, far eastern Russia, and Japan.

Cuculiformes, cuculidae: Latin cuculus cuckoo.
Hierococcyx Greek hierax hawk and kokkux cuckoo.
hyperythra, hyperythrus: Greek hupo beneath; eruthros red. The word in Greek huperuthros reddish, nearly red.