A coucal is one of about 30 species of birds in the cuckoo family. All of them belong in the subfamily Centropodinae and the genus Centropus. 
The genus name combines the Ancient Greek: kentron meaning "spur" or "spike", pous meaning "foot".

1/ Greater coucal or crow pheasant (Bìm bịp lớn, Centropus sinensis)

2/ Lesser coucal (Bìm bịp nhỏ, Centropus bengalensis)