Rainbow lorikeets travel in nomadic flocks, following the flowering of trees — using their brush-tipped tongues to feed on nectar and pollen. At night, they roost communally, perching close together and occasionally hanging upside down or lying on their backs, feet in the air.

The bald parrot is a species that lacks any head feathers — apart from some sparse bristles. Endemic to the east-central Amazon, its baldness might be an adaptation for eating fruit without getting its feathers sticky.

The night parrot was believed to be extinct for almost 80 years. Despite widespread sightings throughout mainland Australia, this nocturnal parrot is one of the country's most elusive birds. It lives in isolated arid regions, spending most of its time on the ground and hiding within spinifex grass.

The sulphur-crested cockatoo communicates with extremely loud screeching calls. The cacophonous noise from a rowdy flock can be near-deafening. As these birds forage on the ground with their flock, there is usually a lookout who sits in the trees and gives an alarm cry if danger approaches.