Wild budgerigars may breed at any time of year, following good rains. Depending on conditions, 2 separate breeding seasons can occur in a single year.
Relatively little effort is put into preparing a nest; it is typically a simple depression with some soft lining material.
Clutch size is usually 4–6 eggs, but can be up to 8. The eggs are white and 17–19mm long.
Incubation is approximately 18 days.
Chicks fledge after about 30 days.