Chrysococcyx (formerly Chalcites) is a genus of cuckoo in the family Cuculidae. 

Violet Cuckoo
(Tìm vịt tím, Chrysococcyx xanthorhynchus) 

The violet cuckoo (Chrysococcyx xanthorhynchus) is a species of cuckoo in the family Cuculidae.

The word Chrysococcyx combines the Ancient Greek khrusos meaning "gold" and kokkux "cuckoo".
xanthorhynchus
xanthos,-E,-on, yellow of various shades, golden or pale yellow; also red-yellow, chestnut, auburn.
rhynkhos New Latin from Greek meaning bill.