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==Species== The genus contains six species:<ref name=IOC>{{cite web |url=http://www.worldbirdnames.org/ |title=IOC World Bird List (v 10.2) |last1=Gill |first1= F. |last2=Donsker|first2=D.|last3=Rasmussen |first3=P. |date=July 2020 |access-date=July 15, 2020 }}</ref> {{Species table |genus= Molothrus |authority-name=[[William Swainson|Swainson]] |authority-year=1832 |species-count=six|no-note=y|narrow-percent=75}} {{Species table/row |name=Screaming cowbird |binomial=[[Molothrus rufoaxillaris]] |image=File:Screaming Cowbird (Molothrus rufoaxillaris).jpg|image-size=180px |image-alt= |authority-name=Cassin |authority-year=1866 |authority-not-original= |range= Northeast and central Argentina, southeast Bolivia, central Brazil and throughout Paraguay and Uruguay |range-image=File:Molothrus rufoaxillaris map.svg |range-image-size=180px |size= |habitat= |hunting= |iucn-status= LC |population= |direction= |subspecies= }} {{Species table/row |name= Giant cowbird|binomial=[[Molothrus oryzivorus]] |image=File:Giant Cowbird - Pantanal - Brazil H8O0545 (23593619780).jpg|image-size=180px |image-alt= |authority-name=Gmelin, JF |authority-year=1788 |authority-not-original=yes |range= Southern Mexico south to northern Argentina, and on Trinidad and Tobago |range-image=File:Molothrus oryzivorus map.svg |range-image-size=180px |size= |habitat= |hunting= |iucn-status= LC |population= |direction= |subspecies={{Collapsible list |expand=yes |title=Two subspecies |bullets=on | ''M. o. impacifus'' ([[James L. Peters|Peters, JL]], 1929) | ''M. o. oryzivorus'' ([[Johann Friedrich Gmelin|Gmelin, JF]], 1788) }} }} {{Species table/row |name=Shiny cowbird |binomial=[[Molothrus bonariensis]] |image=File:Shiny cowbird (Molothrus bonariensis) male.JPG|image-size=180px |image-alt=|image-caption=Male |image2 =File:Molothrus bonariensis Chamón común Shiny Cowbird (female) (8348449535).jpg|image2-caption=Female |authority-name=Gmelin, JF |authority-year=1789 |authority-not-original=yes |range= South America, the Caribbean, and Florida |range-image=File:Molothrus bonariensis map.svg |range-image-size=180px |size= |habitat= |hunting= |iucn-status= LC |population= |direction= |subspecies={{Collapsible list |expand=yes |title=Seven subspecies |bullets=on | ''M. b. minimus'' Dalmas, 1900 | ''M. b. cabanisii'' [[John Cassin|Cassin]], 1866 | ''M. b. venezuelensis'' [[Witmer Stone|Stone]], 1891 | ''M. b. aequatorialis'' [[Frank Chapman (ornithologist)|Chapman]], 1915 | ''M. b. occidentalis'' [[Hans von Berlepsch|Berlepsch]] & [[Jan Sztolcman|Stolzmann]], 1892 | ''M. b. riparius'' [[Ludlow Griscom|Griscom]] & [[James Greenway|Greenway]], 1937 | ''M. b. bonariensis'' ([[Johann Friedrich Gmelin|Gmelin, JF]], 1789) }} }} {{Species table/row |name=Bronzed cowbird |binomial=[[Molothrus aeneus]] |image=File:Bronzed Cowbird (Molothrus aeneus) (7223072934).jpg|image-size=180px |image-alt= |authority-name=Wagler|authority-year= 1829|authority-not-original=yes |range= Southern U.S. states of California, Arizona, New Mexico, Texas, and Louisiana south through Central America to Panama |range-image=File:Molothrus aeneus map.svg |range-image-size=180px |size= |habitat= |hunting= |iucn-status= LC |population= |direction= |subspecies={{Collapsible list |expand=yes |title=Three subspecies |bullets=on | ''M. a. loyei'' <small>Parkes & Blake, 1965</small> | ''M. a. assimilis'' <small>([[Edward William Nelson|Nelson]], 1900)</small> | ''M. a. aeneus'' <small>([[Johann Georg Wagler|Wagler]], 1829)</small> }} }} {{Species table/row |name= Bronze-brown cowbird|binomial=[[Molothrus armenti]] |image=|image-size=180px |image-alt= |authority-name=Cabanis |authority-year=1851 |authority-not-original=yes |range= Colombia |range-image=File:Molothrus armenti map.svg |range-image-size=180px |size= |habitat= |hunting= |iucn-status= NT |population= |direction= |subspecies= }} {{Species table/row |name= Brown-headed cowbird|binomial=[[Molothrus ater]] |image=File:Molothrus ater 2.jpg|image-size=180px |image-alt=|image-caption=Male |image2 =File:Brown headed cowbird female in JBWR (25490).jpg|image2-caption=Female |authority-name=Boddaert |authority-year=1783 |authority-not-original=yes |range= Southern Canada, United States, and Mexico |range-image=File:Molothus ater Map.svg |range-image-size=180px |size= |habitat= |hunting= |iucn-status= LC |population= |direction= |subspecies={{Collapsible list |expand=yes |title=Three subspecies |bullets=on | ''M. a. artemisiae'' [[Joseph Grinnell|Grinnell]], 1909 | ''M. a. obscurus'' ([[Johann Friedrich Gmelin|Gmelin, JF]], 1789) | ''M. a. ater'' ([[Pieter Boddaert|Boddaert]], 1783) }} }} {{Species table/end}} One [[Extinction|extinct]] species, ''[[Molothrus resinosus]]'', is known from [[fossil]] remains recovered from the [[Talara Tar Seeps]] of northwestern [[Peru]], and likely went extinct during the [[late Quaternary]]. It may have been a close associate of [[Pleistocene megafauna]] communities, and may have gone extinct following their collapse in populations.<ref>{{Cite journal|last1=Steadman|first1=David W.|last2=Oswald|first2=Jessica A.|date=July 2020|title=New species of troupial (''Icterus'') and cowbird (''Molothrus'') from ice-age Peru|url=https://bioone.org/journals/the-wilson-journal-of-ornithology/volume-132/issue-1/1559-4491-132.1.91/New-species-of-troupial-Icterus-and-cowbird-Molothrus-from-ice/10.1676/1559-4491-132.1.91.full|journal=The Wilson Journal of Ornithology|volume=132|issue=1|pages=91–103|doi=10.1676/1559-4491-132.1.91|s2cid=220714575 |url-access=subscription}}</ref> The [[convex-billed cowbird]] (''Pandanaris convexa'') is another extinct species that likely co-evolved with the megafauna, though it is placed in its own genus. The nonparasitic [[baywing]]s were formerly placed in this genus; they are now classified as ''Agelaioides''.
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