Its note is a little feeble song somewhat resembling that of the _Maluri_. It feeds solely on minute insects of various kinds, in searching for which it assumes the usual clinging and prying positions of other insectivorous birds which seek their food among the leaves and branches of shrubs and trees. It breeds in November; the nest, which is of a domed form, being placed in some low shrub, often in that of the jam-wood, and composed of grasses lined with a few feathers. The eggs are five in number, and of a white colour, slightly tinged with greenish grey; they measure seven and a half lines long by five and a half lines broad. No visible difference is observable in the outward appearance of the sexes. All the upper surface, wings and tail olive-brown; primaries dark brown; tail crossed by a broad band of brownish black; all the under surface light buff; irides greenish white; bill and feet black. The figures are those of a male and a female of the natural size. [Illustration: ACANTHIZA NANA: _Vig. & Horsf._ _J. Gould and H. C. Richter del et lith._ _Hullmandel & Walton Imp._ ] ACANTHIZA NANA, _Vig. & Horsf._ Little Acanthiza. _Dwarf Warbler_, var. A.? Lath. Gen. Hist., vol. vii. p. 134. No. 161. _Acanthiza nana_, Vig. & Horsf. in Linn. Trans., vol. xv. p. 226.—Less. Man. d’Orn., tom. i. p. 283. This little bird, which is very generally distributed over the colonies of New South Wales and South Australia, inhabits the extremities of the branches of the various trees, without, so far as I could observe, evincing a partiality for any particular kind; the _Casuarinæ_ on the banks of creeks, the _Eucalypti_ of the plains, and the belts of _Banksiæ_ being equally resorted to by it. Insects of various orders constitute its sole food, and in the capture of these it exhibited many lively and varied actions, which strongly reminded me of those of the _Regulus cristatus_ of our own island: that, like its near allies, it may occasionally resort to the ground for food, I think very likely, yet I do not recollect having seen it in such situations. The nest is a neat domed structure with a small entrance near the top, and is composed of fine grasses; its site varies according to circumstances, but is generally among the smaller branches of the trees. The number and colour of its eggs are at present unknown. As its name implies, and as will be seen on reference to the Plate, the _Acanthiza nana_ is one of the more diminutive, although not the least of the Australian birds. There is no outward difference by which the sexes can be distinguished, neither do they undergo any seasonal change, nor is there any great variation in the colouring of the young and the adult.