Chestnut-rumped Thornbill

The chestnut-rumped thornbill (Acanthiza uropygialis) is a small passerine bird in the family Acanthizidae, endemic to Australia. Specially named for its pale-chestnut rump from mediaeval Latin uropygium, the rump. Its other names include chestnut-tailed or chestnut-backed thornbill, tit or tit-warbler, chestnut-rumped tit or tit-warbler. A plain, pale thornbill, with pale eyes, it is widespread throughout inland Australia, west of the Great Dividing Range to the West Australian coast but is absent in the far north and humid southwestern WA. It is a cooperative breeder like some of the other thornbills. Mid-sized thornbill similar in size and shape to inland thornbill (A. apicalis) and slaty-backed thornbill (A. robustirostris). Pale and plain with pale iris similar to buff-rumped (Acanthiza reguloides), western (A.inornata), slender-billed (A. iredalei) and yellow-rumped thornbills (A. chrysorrhoa). Pale grey-brown upper, rich chestnut rump and mostly black tail with pale tips, pale mottled ear-coverts and rufous suffusion on forehead and crown. Plain whitish underbody. The sexes are alike, with no seasonal variation.