As it's name suggests the Chestnut-rumped Thornbill is a pale, plain brownish-grey bird with a rich chestnut rump and a sharp bill. These birds have a mostly black tail with pale tips and a speckled grey face with white scalloping. Male and female birds look alike but juveniles are slightly lighter in colour. All have white eyes and grey-black bills and legs.
Chestnut rumped Thornbills are usually found in small flocks , sometimes twos or threes, and sometimes with other thornbills or similar small birds. Active and restless, Chestnut rumped Thornbills like to forage in shrubs, trees and on the ground, flitting and hopping among foliage and low branches and searching among fallen debris, all the while uttering quiet twittering notes to maintain contact. Their flight is similar to that of other thornbills, flying from cover to cover in low undulating dashes, each undulation accompanied by flirting movement of tail.
