Both these two birds have green the hood possessing blue, red and black colors.
The difference between Blue-throated Barbet and Blue-eared Barbet in Vietnam:
1/ Green-eared barbet (Psilopogon faiostrictus)
Pale green ear patch.
No eyering,
Dark colored bill
2/ Lineated barbet (Psilopogon lineatus)
Grey-striped all over the hood.
Orange or light yellow eyering,
Pale or warm colored bill.
