Chestnut-necklaced partridge 
(Gà so vòng cổ, Tropicoperdix charltonii) 
Some authorities consider the green-legged partridge (A. chloropus) to be conspecific with this species.

The chestnut-necklaced partridge (Tropicoperdix charltonii) is a species of bird in the family Phasianidae. 
The bird is found in forests in the Thai-Malay Peninsula,  Peninsula and Sumatra.

Galliformes is a scientific order of heavy-bodied, ground-feeding birds (landfowl) named from Latin gallus ("cock/rooster") and forma ("shape/form").

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).

trópico m (plural trópicos), tropic (either of the two parallels north and south of the equator);
Perdix (Ancient Greek: Πέρδιξ means "partridge";