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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 Parque Provincial Potrero de Yala

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: 511528
  Adult

Parque Provincial Potrero de Yala
Jujuy
Argentina
10/07/2022
Manuel Godoy



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 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
220365227/11/2024ArgentinaJujuyParque Provincial Potrero de YalaNicolas Olejnik
219778920/10/2024ArgentinaJujuyLaguna del Rodeo, Parque Provincial Potrero de YalaElsa Longo
219928829/09/2024ArgentinaJujuyParque Yala, Parque Provincial Potrero de Yala7Pablo Eguia
215730316/09/2024ArgentinaJujuyRío Yala, Parque Provincial Potrero de Yala7Jose Luis Fernandez Guaraz
204970110/03/2024ArgentinaJujuyParque Provincial Potrero de Yala1Victor Hugo Michelini
192027504/11/2023ArgentinaJujuyLos Nogales, Parque Provincial Potrero de Yala6Jorge Schlemmer
191867004/11/2023ArgentinaJujuyLos Nogales, Parque Provincial Potrero de Yala6Nino A. Grangetto
191685604/11/2023ArgentinaJujuyLos Nogales, Parque Provincial Potrero de Yala6Pablo Eguia
168398918/11/2022ArgentinaJujuyRío Yala, Parque Provincial Potrero de YalaMauricio Secchi
209785723/10/2022ArgentinaJujuyParque Provincial Potrero de Yala15Nazareno Del Carlo
Page 1

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Citation recommended:

EcoRegistros. 2026. Shiny Cowbird (Molothrus bonariensis) - Species sheet. Acceded from https://www.ecoregistros.org on 15/04/2026.