Red-Vented Barbet 
(Thầy chùa đít đỏ, Psilopogon lagrandieri)

The red-vented barbet (Psilopogon lagrandieri) is an Asian barbet native to Laos, Vietnam and Cambodia.

Piciformes, picidae, picus: woodpecker
Megalaima means ‘large throat’ in Greek.
The name Psilopogon combines the Ancient Greek psilos meaning "bare" and pōgōn meaning "beard".