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Shiny Cowbird

Molothrus bonariensis
(Gmelin, JF, 1789)
Tordo Renegrido
Chupim

Family: Icteridae
Order: Passeriformes
Class: Aves
Phylum / Division: Chordata
Kingdom: Animalia

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Records from Villa Rumipal

Conservation status according to BirdLife International: Least Concern

Description: It is a medium-sized bird with a robust build and upright posture, showing clear sexual dimorphism. The male displays glossy black plumage with bluish or purplish iridescence, while the female is much duller, with brownish to grayish tones and fine streaking. The bill is short, strong, and conical, suited to a varied diet, and the dark eyes give it an alert expression.

Geographic distribution: It is widely distributed throughout South America, with natural and human-facilitated expansion into Central America and parts of the Caribbean. It is one of the most widespread species within its genus.

Habitat: It primarily inhabits open and semi-open environments, such as grasslands, farmland, rural areas, city outskirts, and urban parks. Its high tolerance for human-altered landscapes has greatly contributed to its geographic expansion.

Feeding: This species is omnivorous, feeding mainly on seeds, grains, and small invertebrates such as insects and larvae. It often forages on the ground, alone or in groups, frequently taking advantage of resources associated with livestock and agriculture.

Behavior: It is a gregarious and opportunistic species, commonly seen in flocks, especially outside the breeding season. It shows confident and adaptable behavior, often frequenting areas with intense human activity. During reproduction, females exhibit particularly stealthy behavior.

Nesting: It has a distinctive reproductive strategy known as brood parasitism, as it does not build its own nest. Females lay their eggs in the nests of other bird species, which then incubate the eggs and raise the chicks. The young often grow rapidly and may outcompete or displace the host’s offspring.

Conservation status: It is classified as Least Concern, due to its wide distribution, large population size, and strong adaptability. No significant global threats are currently identified.


Author of this compilation: EcoRegistros – 22/12/2025




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Last published photographs

Foto
Photography ID: 550079
  Adult

Villa Rumipal
Córdoba
Argentina
10/01/2023
Jorge Schlemmer



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 Reports


 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
232510822/07/2025ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa Rumipal15Franco Montaño Herrero
204244409/06/2024ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa RumipalHugo Caverzasi
192667008/12/2023ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa RumipalHugo Caverzasi
189042301/10/2023ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa RumipalJorge Schlemmer
177936417/06/2023ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa Rumipal2Hugo Caverzasi
168000927/11/2022ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa RumipalHugo Caverzasi
155697013/03/2022ArgentinaCórdobaReserva Ambiental Aguada de los Pájaros, Villa Rumipal10Fabrizio García
150288122/11/2021ArgentinaCórdobaVilla RumipalHugo Caverzasi
150282121/11/2021ArgentinaCórdobaDesembocadura del río Santa Rosa, Villa RumipalHugo Caverzasi
139517019/04/2021ArgentinaCórdobaLugones, Villa RumipalMauricio Secchi
Page 1

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Citation recommended:

EcoRegistros. 2026. Shiny Cowbird (Molothrus bonariensis) - Species sheet. Acceded from https://www.ecoregistros.org on 07/04/2026.