Don't want to see ads? Sign up...




Species icon
Shiny Cowbird

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

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

 Request change
Filters

Records from Belgrano

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




Loading map...




Last published photographs




 View all photographs of the species




 Add a photography of this species





Last Vocalizations published




 Add an audio of this species





Last Filmings published




 Add a film of this species





 Reports


 Detail of places sorted by number of records








Page 1
Record IDDateExact timeCountryProvince / departmentPlaceFilmedPhotographedRecorded vocalObservedHeardWounded or deadNumber of individualsUser or BibliographyDetail
194997718/01/2024ArgentinaCiudad Autónoma de Buenos AiresCazadores y Echeverria, BelgranoDiego Carus
170296615/01/2023ArgentinaCiudad Autónoma de Buenos AiresAvenida Melián 2189, Belgrano8Sebastián Otero
169577401/01/2023ArgentinaCiudad Autónoma de Buenos AiresWashington 2266, Belgrano1Sebastián Otero
165042709/10/2022ArgentinaCiudad Autónoma de Buenos AiresArcos 2681, BelgranoPablo Lo Guzzo
164841304/10/2022ArgentinaCiudad Autónoma de Buenos AiresManuel Ugarte 2350, Belgrano1Sebastián Otero
164738802/10/2022ArgentinaCiudad Autónoma de Buenos AiresO´Higgins 2620, BelgranoPablo Lo Guzzo
164384625/09/2022ArgentinaCiudad Autónoma de Buenos AiresWashington 2220, Belgrano13Sebastián Otero
150215023/11/2021ArgentinaCiudad Autónoma de Buenos AiresAvenida Presidente Figueroa Alcorta 7250, BelgranoPablo Lo Guzzo
149908720/11/2021ArgentinaCiudad Autónoma de Buenos AiresBelgranoPablo Lo Guzzo
148639127/10/2021ArgentinaCiudad Autónoma de Buenos AiresArcos 2665, BelgranoPablo Lo Guzzo
Page 1

 Add a record of this species

Citation recommended:

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