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Arborophila is a bird genus in the family Phasianidae. 
The genus has the second most members within the Galliformes after Pternistis, although Arborophila species vary very little in bodily proportions with different species varying only in colouration/patterning and overall size. 

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).
Arborophila: the Latin arbor, arboris meaning "tree" with the Ancient Greek philos meaning "-loving".

1/ Orange-necked partridge (Gà so cổ hung/cam, Arborophila davidi)
2/ Common hill partridge, necklaced hill partridge, or simply hill partridge (Gà so họng đen, Arborophila torqueola) 
3/ Rufous-throated partridge (Gà so họng hung, Arborophila rufogularis)
4/ Bar-backed partridge (Gà so họng trắng, Arborophila brunneopectus), also known as the brown-breasted hill-partridge

Bar-Backed Partridge, also known as the brown-breasted hill-partridge
(Gà so họng trắng, Arborophila brunneopectus)

The bar-backed partridge (Arborophila brunneopectus), also known as the brown-breasted hill-partridge, is a species of partridge in the family Phasianidae.

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).
Arborophila: the Latin arbor, arboris meaning "tree" with the Ancient Greek philos meaning "-loving".
brunneopectus: brunneus brown; pectus: breast.

Orange-Necked Partridge 
(Gà so cổ hung/cam, Arborophila davidi)

The orange-necked partridge, which is found in Cambodia and Vietnam, is a species of bird in the family Phasianidae.

Compare:
- Rufous-Throated Partridge (Gà so họng hung, Arborophila rufogularis): only rufous or orange color on the throat, scaly body with dark colors.
- Orange-necked partridge (Arborophila davidi): Throat has white and orange colors, scaly body with light colors.

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).
Arborophila: the Latin arbor, arboris meaning "tree" with the Ancient Greek philos meaning "-loving".

Rufous-Throated Partridge 
(Gà so họng hung, Arborophila rufogularis)

The rufous-throated partridge (Arborophila rufogularis) is a species of bird in the family Phasianidae.

Compare:
- Rufous-Throated Partridge (Gà so họng hung, Arborophila rufogularis): only rufous or orange color on the throat, scaly body with dark colors.
- Orange-necked partridge (Arborophila davidi): Throat has white and orange colors, scaly body with light colors.

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).
Arborophila: the Latin arbor, arboris meaning "tree" with the Ancient Greek philos meaning "-loving".
rufo: From Latin rūfus: reddis.
gularis gula (“throat”).