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Hierococcyx or hawk-cuckoos is a genus of birds in the family Cuculidae. The resemblance to hawks gives this group the generic name of hawk-cuckoos.
The genus is sometimes included in the genus Cuculus.

1/ Large hawk-cuckoo (Chèo chẹo lớn, Hierococcyx sparverioides)
previously assigned as Cuculus sparverioides
2/ Malaysian hawk-cuckoo or Malay hawk-cuckoo (Bìm bịp nhỏ, Hierococcyx fugax)
previously assigned as Cuculus fugax

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

Cuculiformes, cuculidae: Latin cuculus cuckoo.
Hierococcyx Greek hierax hawk and kokkux cuckoo.

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.