The long-billed corella is found in grassy woodlands and grasslands, including pasture, fields of agricultural crop, and urban parks.

[5] The call of the long-billed corella is a quick, quavering, falsetto currup!,[3] wulluk-wulluk, or cadillac-cadillac combined with harsh screeches.

[3] Long-billed corellas form monogamous pairs and both sexes share the task of building the nest, incubating the eggs, and caring for the young.

[5] Nests are made in decayed debris,[3] the hollows of large old eucalypts, and occasionally in the cavities of loose gravely cliffs.

Within New South Wales, the corellas are the most common avian pest among sporting fields and golf courses, as they can dig holes in the ground up to 3 in across and 6 in deep.

[5] In July 2019, in a scene that was said to resemble a "horror movie",[12][13] about 60 corellas in Adelaide, South Australia,[14] died in a suspected case of poisoning after "falling from the sky" wailing and bleeding from their mouths.

Additionally, the local Alexandrina council had, previously, allowed for periodic culling of short-billed corellas due to crop damage, chewing on streetlights and wires, damaging infrastructure (such as buildings and sporting equipment), and unfairly outcompeting other native species of birds, insects, small mammals, and other organisms.