Yellow-Rumped Thornbill – Profile | Traits | Facts | Call | Breeding

Yellow-rumped thornbill

The yellow-rumped thornbill, scientific name Acanthiza chrysorrhoa is a species of passerine bird from the genus Acanthiza.

Yellow-rumped thornbill Profile

The species has a large distribution throughout western, southern, and eastern Australia in addition to Tasmania; it’s absent from the north coast of Western Australia, components of central Australia, northern Queensland, and central and northern Northern Territory. The species inhabits a large range of habitats, together with open forest and woodland, grasslands, savannah, and scrubland.

The genus was as soon as positioned within the family Pardalotidae however that family was broken up and it’s now within the family Acanthizidae. There are 4 subspecies of yellow-rumped thornbill.

It is a small, brownish bird with a particular yellow rump and skinny darkish bill. It inhabits savannah, scrub, and forests throughout most of Australia and eats bugs. The species engage in cooperative breeding.


The Yellow-rumped Thornbill is discovered all through eastern and south-eastern Australia, together with Tasmania, as properly in southern components of the Northern Territory and on the Nullarbor Plain in Western Australia.

yellow-rumped thornbill, scientific name Acanthiza chrysorrhoa


The Yellow-rumped Thornbill is discovered on the ground in open habitats, equivalent to woodlands, forests, shrublands, and grasslands with some bushes.

It can be common in agricultural lands, alongside watercourses, beside roads, and in parks and gardens. It is present in most climatic zones, however solely sparse in tropics, arid zone, and east of the Great Dividing Range.

Yellow-rumped thornbill Description

The yellow-rumped thornbill is the most important species of thornbill, 9.5–12 cm (3.7–4.7 in) long and weighing 9 g (0.32 oz).[6] It has a short tail and a long slender bill.

The species has a particular yellow rump, a black brow with white spots, a gray head and neck, a white line above the attention, and a white throat.

The stomach is white with light buff below the wings. The wings are gray and the tail is black. The plumage varies considerably, relying on subspecies.

yellow-rumped thornbill, scientific name Acanthiza chrysorrhoa


The yellow-rumped thornbill has a particular song described as “twittering, musical, sweet, high-pitched”. The species can be reported to be an achieved mimic of different birds, specifically mimicking the alarm calls of the noisy miner.

Yellow-rumped thornbill Identification

The Yellow-rumped Thornbill is the most important and possibly the best-known thornbill, with a placing yellow rump.

It is principally grey-olive to grey-brown above to cream below, with a white-spotted black crown, white stripe above the attention, and darkish around the attention. The tail is black, with white suggestions.

The sexes are comparable. Young birds have softer, fluffier plumage on the body, however are in any other case comparable. Often seen in small flocks feeding on the ground, typically with different thornbills and ground-feeding birds.

yellow-rumped thornbill, scientific name Acanthiza chrysorrhoa

Yellow-rumped thornbill Feeding

The yellow-rumped thornbill is insectivorous; main prey gadgets embrace ants, beetles, bugs, and lerps. Other gadgets ate embrace spiders, flies and seeds.

The species often forages in small teams of between 3-12 people and should be part of blended species-flocks with different small insectivorous passerines such because the speckled warbler (Chthonicola sagittatus), weebill (Smicrornis brevirostris), and different species of thornbill.

The Yellow-rumped Thornbill feeds primarily on bugs, however might typically eat seeds. It is primarily a ground-feeding bird, more so than most different thornbills, however stays close to tree cover and can typically feed in shrubs or bushes.

Often seen in blended flocks with different thornbills and birds equivalent to Speckled Warblers and Weebills.


Musical, cheery, tinkling song, ending with two clear whistled notes, repeated typically.

Yellow-rumped thornbill Biology

Yellow-rumped Thornbills typically breed co-operatively, with a pair being assisted by one or two auxiliaries (helpers), which assist to construct the nest and feed the younger.

The nest is a big and untidy construction of grass and bark with two components: a higher ‘false’ cup-shaped nest and a lower, domed, nest-chamber with a hooded entrance.

The function of the false nest shouldn’t be clearly understood, with many theories being put ahead, equivalent to deterring predators or parasitic cuckoos, a roosting place for males or fledglings, a ‘practice’ nest for the helpers or as a ‘displacement’ exercise for males.

The nest is often within the dense foliage of bushes, close to the end of branches, or in vines or mistletoe. The feminine incubates the eggs alone, however is assisted by the male and any helpers with feeding and defending the younger.

Breeding Season: In all months; primarily July to December.

yellow-rumped thornbill, scientific name Acanthiza chrysorrhoa

Yellow-rumped thornbill Breeding

Breeding takes place from July to December, with one, two, and even more broods a year. Nesting often happens as a pair, however typically one to a few helpers will help the breeding pair.

The nest is a messy dome-shaped construction manufactured from dried grass and different vegetation hidden low down amongst dense foliage or shrubs, or typically in vines or mistletoe.

Atop the dome is a cup-shaped melancholy that serves as a false nest, whereas the actual nest is inside with a hid entrance.

A clutch of three or 4 dull-white oval eggs, frivolously spotted with red-brown largely on the massive end and every measuring 18 mm × 13 mm (0.71 in × 0.51 in), is laid.

The feminine incubates the clutch, and the clutch takes around 16–18 days to hatch. On hatching each parent assist feed the brood. The nestling interval is around 19 days. The species is parasitized by the shining bronze cuckoo and the fan-tailed cuckoo.

Many species of birds take eggs and chicks from the nest, together with red wattlebirds, currawongs, Australian magpies, and ravens, and many honeyeaters will destroy their nests as a way to steal nesting materials. Ringing research has discovered that the species can live for as many as 9 years.


Urban growth around massive cities has induced Yellow-rumped Thornbill populations to say no. However, it has tailored properly to city and agricultural habitats, the place native vegetation stays, besides in Western Australia the place intensive clearing has occurred. Eaten by cats and typically hit by automobiles on roads.

yellow-rumped thornbill, scientific name Acanthiza chrysorrhoa

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