Black-headed woodpecker 
(Gõ kiến xanh hông đỏ, Picus erythropygius)

The black-headed woodpecker (Picus erythropygius) is a species of bird in the family Picidae. 
The bird is found in Cambodia, Laos, Myanmar, Thailand, and Vietnam, in deciduous and coniferous forests.

picidae, picus: woodpecker
erythropygius
 Erythro: eruthros meaning "red"
 -pugios -rumped (puge: rump).