Diferenzas entre revisións de «Emú»

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| name = Emu
| fossil_range = {{fossil range|Middle Miocene|present}} [[Miocene]] – present<ref>{{cite journal | last1 = Patterson | first1 = C. | last2 = Rich | first2 = Patricia Vickers | year = 1987 | title = The fossil history of the emus, ''Dromaius'' (Aves: Dromaiinae)| journal = Records of the South Australian Museum | volume = 21| pages = 85–117 | url=http://biodiversitylibrary.org/page/40781397 }}</ref>
| status = LC
| status_system = IUCN3.1
| status_ref = <ref name=IUCN>{{IUCN|id=22678117 |title=''Dromaius novaehollandiae'' |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=14 July 2015}}</ref>
| image = Emu-wild.jpg
| image_width = 250px
| image_caption =
| genus = Dromaius
| species = novaehollandiae
| authority = ([[John Latham (ornithologist)|Latham]], 1790)<ref name="Davies">{{cite encyclopedia |last=Davies |first=S.J.J.F.|editor=Hutchins, Michael |encyclopedia=Grzimek's Animal Life Encyclopedia |title=Emus |edition=2nd |year=2003 |publisher=Gale Group |volume=8 Birds I Tinamous and Ratites to Hoatzins |location=Farmington Hills, Michigan|isbn=0-7876-5784-0 |pages= 83–87}}</ref>
| subdivision_ranks = [[Subspecies]]
| subdivision =
*''D. n. novaehollandiae'' <small>([[John Latham (ornithologist)|Latham]], 1790)<ref name="tax" /></small>
*''D. n. woodwardi'' <small>([[Gregory Mathews|Mathews]], 1912) (disputed)<ref name=ag>{{cite web|url=http://www.environment.gov.au/biodiversity/abrs/online-resources/fauna/afd/taxa/Dromaius_novaehollandiae/names |title=Names List for ''Dromaius novaehollandiae'' (Latham, 1790) |publisher=Department of the Environment, Water, Heritage and the Arts|accessdate=14 July 2015}}</ref></small>
*†''[[D. n. diemenensis]]'' <small>[[Le Souef]], 1907<ref name="tax">{{cite web|url=http://sn2000.taxonomy.nl/Main/Index/Genus/..%5C..%5CClassification%5C51276.htm |title=Systema Naturae 2000 / Classification, ''Dromaius novaehollandiae'' |accessdate=14 July 2015 |last=Brands |first=Sheila |date=14 August 2008 |work=Project: The Taxonomicon |deadurl=yes |archiveurl=https://web.archive.org/web/20160310083201/http://sn2000.taxonomy.nl/main/classification/51276.htm |archivedate=10 March 2016 |df=dmy }}</ref></small>
*†''[[D. n. minor]]'' <small>[[Walter Baldwin Spencer|Spencer]], 1906</small>
| synonyms = {{collapsible list|bullets = true|title=<small>List</small>
|''Casuarius novaehollandiae'' <small>Latham, 1790</small>
|''Dromiceius novaehollandiae'' <small>(Latham, 1790)</small>
|''Casuarius australis'' <small>Shaw, 1792</small>
|''Dromaius ater'' <small>Vieillot, 1817</small>
|''Dromiceius emu'' <small>Stephens, 1826</small>
|''Casuarius diemenianus'' <small>Jennings, 1827</small>
|''Dromiceius major'' <small>Brookes, 1830</small>
|''Dromaeus irroratus'' <small>Bartlett, 1859</small>
|''Dromaeus ater'' <small>([[Edward Blyth|Blyth]], 1862)</small>
| synonyms_ref = <ref name="ag" />
| range_map = Dromaius novaehollandiae map distribution 2.svg
| range_map_width =
| range_map_caption = The emu inhabits the pink areas.
The '''emu''' (''Dromaius novaehollandiae'') is the second-largest living bird by height, after its [[ratite]] relative, the [[ostrich]]. It is [[Endemism|endemic]] to Australia where it is the largest native bird and the only [[Extant taxon|extant]] member of the [[genus]] ''[[Dromaius]]''. The emu's range covers most of mainland Australia, but the [[Tasmanian emu]] and [[King Island emu]] subspecies became extinct after the [[History of Australia (1788–1850)|European settlement of Australia]] in 1788. The bird is sufficiently common for it to be rated as a [[least-concern species]] by the [[International Union for Conservation of Nature]].
Emus are soft-feathered, brown, [[flightless bird]]s with long necks and legs, and can reach up to {{convert|1.9|m|ft}} in height. Emus can travel great distances, and when necessary can sprint at {{convert|50|km/h|mph|abbr=on}}; they forage for a variety of plants and insects, but have been known to go for weeks without eating. They drink infrequently, but take in copious amounts of water when the opportunity arises.
Breeding takes place in May and June, and fighting among females for a mate is common. Females can mate several times and lay several clutches of eggs in one season. The male does the incubation; during this process he hardly eats or drinks and loses a significant amount of weight. The eggs hatch after around eight weeks, and the young are nurtured by their fathers. They reach full size after around six months, but can remain as a family unit until the next breeding season. The emu is an important cultural icon of Australia, appearing on the [[coat of arms of Australia|coat of arms]] and various coins. The bird features prominently in [[Indigenous Australian]] mythology.