The enormous flocks of Little Corellas are a familiar sight in outback Australia - sometimes up to two or three thousand birds occur. At night, they can form huge roosts, usually in riverside vegetation and when these are permanent, results in stripping of the topmost canopy. Occasionally such roosts form near human habitation in which case the noise becomes hard to bear.

Little Corellas feed on the ground on the seeds of grasses and occasionally on saltbush or acacia seed. They pair for life and have a permanent nest site in a tree hollow, often in a River Red Gum.