White-browed Babblers build communal roosting nests of twigs and sticks, usually in dead or partly living trees. They participate in activities such as dust-bathing, preening and feeding as a group.
The White-browed Babbler is a small dark brown-grey bird with a white throat, a white tipped tail and a long, pointed curved bill. It has a distinct white brow and dark eye stripe. The tail is long and graduated, with a rounded tip and is often held raised or fanned. It is a very active bird that is often found in noisy social groups. It is also known as the Chatterer, Cackler or Yahoo.
The White-browed Babbler is the smallest of the babblers and is much smaller than the similarly coloured Grey-crowned Babbler, P. temporalis. Its white brow is long and narrow, curving back from the base of the bill to a fine point at the nape. The Grey-crowned and Hall's Babbler, P. halli, both have a wider brow line. The Chestnut-crowned Babbler, P. ruficeps, has a fine eyeline, but has a chestnut cap.
The White-browed Babbler is endemic to mainland Australia, mainly south of the Tropic of Capricorn and west of the Great Dividing Range and to the north of the Dividing Range in Victoria, extending to south-eastern South Australia. Scattered populations are found in outback Northern Territory and Western Australia, particularly in the south-western corner of Western Australia.
The White-browed Babbler is found in dry sclerophyll woodlands with a shrubby understorey, mulga, acacias, mallee, cyprus pine scrubs, timber, scrub along watercourses and saltbush.
The White-browed Babbler feeds on insects, spiders and other invertebrates, small amphibians, crustaceans and reptiles and will also eat fruits and seeds. It mainly feeds on the ground, among leaf litter or under logs and branches.
The White-browed Babbler builds a domed stick nest, with a hooded side entrance. It builds both brood (for breeding) and roost (for resting) nests. Breeding pairs are monogamous, but they form co-operative breeding groups comprising two to four breeding pairs and two to eight non-breeding helpers. Only the breeding female incubates the eggs, though other birds in the group feed her and the young birds. Co-operatively breeding groups occupy a home-range, but there are complex interactions within and between groups.
The White-browed Babbler has probably declined where habitat has been cleared and fragmented.
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