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Loriculus, or hanging parrots, is a genus of small parrots in the family Psittaculidae.
The name is a diminutive of the genus Lorius.

1/ Vernal hanging parrot (Vẹt lùn, Loriculus vernalis)

Members of the parrot genus Psittacula or Afro-Asian ring-necked parrots, as they are commonly known in aviculture, originate from Africa to South-East Asia. The name of the genus is a diminutive of the Latin word psittacus for a "parrot".

1/ Rose-ringed parakeet (Psittacula krameri), also known as the ringneck parrot (in aviculture) or the Kramer parrot
 the specific krameri commemorates the Austrian naturalist Wilhelm Heinrich Kramer.

2/ Blossom-headed parakeet (Vẹt đầu hồng, Psittacula roseata)

3/ Slaty-headed parakeet (Vẹt đầu xám, Psittacula himalayana)

4/ Long-tailed parakeet (Vẹt đuôi dài, Psittacula longicauda)
The specific epithet longicauda combines the Latin longus meaning "long" and cauda meaning "tail".

5/ Alexandrine parakeet (Vẹt má vàng, Psittacula eupatria), also known as the Alexandrine parrot
named after Alexander the Great.
The specific name eupatria is derived from the Ancient Greek words eu- meaning "well" and patria meaning "descent".

6/ Red-breasted parakeet (Vẹt ngực đỏ, Psittacula alexandri) 
The specific epithet alexandri is from Alexander the Great whose soldiers introduced parakeets to Greece.

Psittaculidae is a family containing Old World parrots. It consists of six subfamilies: Psittrichasinae, Agapornithinae, Loriinae, Platycercinae, Psittacellinae and Psittaculinae.

The name 'Psittaciformes' comes from the ancient Greek for parrot, ψιττακός ('Psittacus'), whose origin is unclear.
The genus name Psittacula is a diminutive of the Latin word psittacus meaning "parrot".

Psittaciformes:
- Strigopidae – New Zealand parrots (4 species)
- Cacatuidae – Cockatoos (22 species)
- Psittacidae – African and New World parrots (179 species)
- Psittaculidae – Old World parrots (203 species)

Psittinus is a genus of parrot in the family Psittaculidae.

1/ Blue-rumped parrot (Vẹt đuôi ngắn, Psittinus cyanurus)