The emu-wrens (''Stipiturus'') are a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped') which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their ...

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

s in the Australasian wren family, Maluridae. They are found only in

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

, where they inhabit scrub,

heathland A heath () is a shrubland habitat found mainly on free-draining infertile, acidic soils and is characterised by open, low-growing woody vegetation. Moorland is generally related to high-ground heaths with—especially in Great Britain—a coole ...

and

grassland A grassland is an area where the vegetation is dominance (ecology), dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes such as clover, and other Herbaceo ...

. They are small birds, 12–19 cm long with the tail accounting for over half of their length. The tail has only six

feathers Feathers are epidermis (zoology), epidermal growths that form a distinctive outer covering, or plumage, on both Bird, avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in ...

which are loose and coarse in structure, rather like the feathers of the

emu The emu (; ''Dromaius novaehollandiae'') is a species of flightless bird endemism, endemic to Australia, where it is the Tallest extant birds, tallest native bird. It is the only extant taxon, extant member of the genus ''Dromaius'' and the ...

. Three species are recognised, of which the mallee emu-wren is endangered.

Taxonomy and systematics

The common name of the genus is derived from the resemblance of their tails to the feathers of an

. The genus was defined by French naturalist

René Lesson René Primevère Lesson (20 March 1794 – 28 April 1849) was a French surgery, surgeon, natural history, naturalist, ornithologist, and herpetologist. Biography Lesson was born at Rochefort, Charente-Maritime, Rochefort, and entered the Naval ...

in 1831 after his visit to Port Jackson on the 1823-5 voyage of the ''Coquille'', although the southern emu-wren had already been encountered and described soon after European settlement at Sydney Cove.Rowley and Russell, p. 202. The three species have been variously considered as one, two or even four species (as the

Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

n subspecies ''westernensis'' of the southern emu-wren also considered a species at one point.Rowley and Russell, p. 203. Their closest relative, based on allozyme studies, appears to be the orange-crowned fairywren of the monotypic genus ''Clytomyias'' from the mountains of New Guinea.

Species

There are three recognised species in the genus: Ornithologist

Richard Schodde Richard Schodde, Order of Australia, OAM (born 23 September 1936) is an Australian botany, botanist and ornithology, ornithologist. Schodde studied at the University of Adelaide, where he received a Bachelor of Science, BSc (Hons) in 1960 and a ...

has proposed that the southern emu-wren is the ancestral form from which the other two species have evolved.

Description

Emu-wrens exhibit sexual dimorphism, the males have brownish plumage with rufous crowns of varying intensity, and a sky blue throat and upper chest. The females lack the blue coloration and are predominantly reddish brown above and paler below. Their most distinctive feature is their long tails, composed of six filamentous feathers, the central two longer again. The tail is double the body length in the case of the southern and rufous-crowned species. They weigh from 5.4 g in the case of the smallest, the rufous-crowned, to 7.5 g of the southern emu-wren.Rowley and Russell, p. 33.

Distribution and habitat

The three species of emu-wrens each live in distinct habitats: the southern emu-wren preferring marshes and heathland, the mallee emu-wren inhabiting spinifex understory in mallee woodland, and the rufous-crowned emu-wren dwelling in spinifex in desert areas.

Behaviour and ecology

Emu-wrens are fairly secretive and hard to spot, living in low shrub cover. They are predominantly insectivorous, but supplement their diet with seeds. Their furtive behaviour and brown colour has resulted in them being mistaken for bush mice. They exhibit a weak but distinctive flight pattern with the tail feathers drooping noticeably.

References

Cited text

* * Del Hoyo, J.; Elliot, A. & Christie D. (editors). (2007). ''

Handbook of the Birds of the World The ''Handbook of the Birds of the World'' (HBW) is a multi-volume series produced by the Spanish publishing house Lynx Edicions in partnership with BirdLife International. It is the first handbook to cover every known living species of bird. ...

''. Volume 12: Picathartes to Tits and Chickadees. Lynx Edicions. *Pizzey, Graham & Knight, Frank (1997) ''The Graham Pizzey & Frank Knight Field Guide to the Birds of Australia'', HarperCollins, London, UK. {{Taxonbar, from=Q964102 Maluridae Endemic birds of Australia Taxa named by René Lesson Taxonomy articles created by Polbot