The Splendid Parakeet (Neophema splendida) is endemic to the arid and semi-arid interior of southern Australia, where it inhabits a landscape defined by mallee eucalyptus, mulga scrub, and spinifex grassland. Its range spans portions of western New South Wales, northwestern Victoria, southern South Australia, and the semi-arid belt of southwestern Western Australia. Within this territory the species favors open woodland with a grassy understorey, particularly areas where annual wildflowers and native grasses produce a seasonal abundance of seed. Unlike many Australian parakeets that concentrate near permanent watercourses, the Splendid Parakeet is adapted to regions where surface water can be scarce, obtaining much of its moisture from the fleshy fruits and succulent vegetation it includes in its diet.
The bird occupies a well-defined ecological niche among the six recognized species of the genus Neophema, a group of small, predominantly ground-feeding parakeets found only in Australia. Among its congeners it is the most inland-adapted, venturing deeper into the arid zone than the Turquoise Parakeet or the Elegant Parakeet, both of which prefer more temperate, wooded country. This ecological separation has been shaped over millennia by the progressive drying of the Australian interior, a climatic trend that favored species capable of exploiting ephemeral food resources and tolerating extreme heat.
Splendid Parakeets are generally observed in pairs or small family groups rather than the large, noisy flocks associated with many other Australian parrots. Their quiet disposition and tendency to feed unobtrusively on the ground among low vegetation made them difficult for early European observers to detect, contributing to the delayed timeline of their scientific description. When disturbed, the birds typically fly to a nearby tree and perch motionless among the foliage, relying on their green dorsal plumage for camouflage despite the male's vivid chest and facial coloring.
The species' dependence on native vegetation communities has made it sensitive to changes in land use. Pastoral grazing, the spread of introduced grasses, and the clearing of mallee for broadacre agriculture have all reduced the extent and quality of its preferred habitat. Despite these pressures, the Splendid Parakeet has demonstrated a degree of resilience, periodically appearing in areas where it had not been recorded for years, suggesting that its nomadic tendencies allow it to exploit favorable conditions across a wide geographic range.