Nominate (Wild)
A variant of Bourke's Parakeet (Neopsephotus bourkii)

Representative Bourke's Parakeetphoto — a dedicated image of this exact morph isn't available yet.
The natural Australian form: soft brown-grey body with pink-flushed underparts and blue rump, with subtle dusty-pastel tones. A quiet, gentle, crepuscular grass parakeet.
Keeper tips for this variant
Bourke's are most active at dawn/dusk and easily spooked at night — provide a small night-light to prevent panicked 'night frights' that injure flighty birds in the dark.