These parrots inhabit arid and semi-arid regions of southern and central Australia. They are mainly ground foragers, feeding on grass seeds and small fruits, and will also eat flowers, nectar, and insects when available. Their feeding behaviour is quiet and unobtrusive, often taking place near water sources.

Scarlet-chested Parrots are typically seen in pairs or small family groups, although they may gather into slightly larger flocks outside the breeding season.  Despite their bright colouring, they can be surprisingly difficult to spot when feeding among grasses.

Breeding usually occurs after rainfall, when food is plentiful. They nest in tree hollows. The female lays 3 to 6 white eggs and incubates them for around 18–20 days, while the male provides food. Chicks stay in the nest for about 4–5 weeks and remain with their parents for some time after fledging as they learn to forage independently.

The Scarlet-chested Parrot is currently listed as a species of Least Concern on the IUCN Red List, but its population is sporadic across most of its range. Habitat loss due to land clearing, overgrazing, and competition for nesting sites poses localized threats.