The Moustached Parakeet, also called the Red-breasted Parakeet, (scientific name confusingly Psittacula alexandri although the related Alexandrine Parakeet is a different species) comes from Indonesia, India and the Himalayas/China, with feral populations in some Indian cities. There are several subspecies in different islands/regions.
The Moustached Parakeet is a little similar to the Derbyan Parakeet - see link below.
They are closely related, as are the other "Psittacula" long-tailed parakeets, the Ring-necked/Rose-ringed and the Alexandrine.
The adult male generally has more strongly-coloured plumage than the female and a longer tail.
In some subspecies his upper and lower bill is red (nominal,
Dammermann, Kangean) and in some the lower bill is black
(Andaman, Indian, Babi, Nias, Simeuluean). The beak of the
female is wholly black in several subspecies.
The golden shoulder ("take my advice")
A smile (and frown)
The nominate subspecies, from Java, is said to be close to extinction in the wild.
The Andaman Moustached above, Psittacula alexandri abbotti, from the Andaman Islands, has slight variations in plumage.
The upper beak of the adult female is fully black; the female shown (above right) is in transition from the horn-coloured beak of the juvenile to black.
Dammerman's Moustached Parakeet above, Psittacula alexandri dammermani, is from the Karimundjawa Islands, Indonesia.
Both male and female have a fully pink upper and lower beaks.
Black lower beak
Red lower beak
The full tail