Streak-throated woodpecker 
(Gõ kiến xanh bụng vằn, Picus xanthopygaeus)

The streak-throated woodpecker (Picus xanthopygaeus) is a species of woodpecker found in the Indian subcontinent.

picidae, picus: woodpecker
xanthopygaeus:
 xanthos,-E,-on, yellow of various shades, golden or pale yellow; also red-yellow, chestnut, auburn
 pygaeus Greek -pugios -rumped (puge: rump).