Red junglefowl (Gà rừng lông đỏ, Gallus gallus) 

The red junglefowl (Gallus gallus), also known as the Indian red junglefowl (and formerly the bankiva or bankiva-fowl), is a species of tropical, predominantly terrestrial bird in the fowl and pheasant family, Phasianidae.
The bird is found across much of Southeast and parts of South Asia.

galliformes derives from "gallus", Latin for "rooster". 
Phasianidae from Phasianus: Latin for "pheasant", derived from the Ancient Greek φἀσιἀνος, phāsiānos, meaning "(bird) of the Phasis", the River Phasis (now the Rioni) in Colchis on the east coast of the Black Sea (now western Georgia).

Bird Species in Vietnam