Banded bay cuckoo or bay-banded cuckoo 
(Tìm vịt vằn, Cacomantis sonneratii)

The banded bay cuckoo or bay-banded cuckoo (Cacomantis sonneratii) is a species of small cuckoo found in the Indian subcontinent and Southeast Asia.

Cuculus: Latin for cuckoo.
The genus Cacomantis name is from the Greek kakos meaning evil or ill-boding and mantis for prophet. The name is associated with or supposed to be predicted "rains" as well as ill fortune and bad weather.

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