Red-rumped Parakeets primarily eat grass seeds.  They may supplement their diet with fruits, flowers, and bugs, especially during the breeding season when protein-rich foot is essential for raising young chick.

These parakeets are highly social birds, often seen in small to medium-sized flocks. They forage as a group and communicate using a variety of vocalizations, including chirps and squawks to maintain contact with flock members and signal potential dangers.

Red-rumped Parakeets are cavity nesters, using hollows in trees as their primary nesting sites.  They are also known to nest in artificial structures like nest boxes, especially in suburban environments where natural nesting sites are scarce.  They line their nests with soft materials like leaves and feathers to provide insulation and comfort to eggs and young chicks.  They lay clutches of 3 to 6 eggs, which hatch in 19 to 22 days.  The young chicks leave the nest after 4 to 5 weeks.  Each pair of Red-rumped Parakeets can produce up to three clutches of chicks per year.

The species is currently classified as “Least Concern” on the IUCN Red List.  Like many species, their primary threat is habitat loss as humans transform landscapes into farms and cities.  Red-rumped parakeet have a maximum lifespan of around 30 years.