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 Villa Paranacito

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

Foto
Photography ID: 186997
  Immature

Villa Paranacito
Entre Ríos
Argentina
01/23/2017
María Alejandra Sosa
Foto
Photography ID: 86187
  Adult

Villa Paranacito
Entre Ríos
Argentina
02/28/2015
Sebastian Cruz



 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
241065704/01/2026ArgentinaEntre RíosVilla ParanacitoNicolas Olejnik
239133424/11/2025ArgentinaEntre RíosAcceso a Estancia Santo Domingo, Villa Paranacito10Diego Oscar
238288107/11/2025ArgentinaEntre RíosVilla ParanacitoNicolas Olejnik
236324519/09/2025ArgentinaEntre RíosVilla ParanacitoAlec Earnshaw
218260102/11/2024ArgentinaEntre RíosAcceso a Estancia Santo Domingo, Villa Paranacito5Diego Oscar
218253102/11/2024ArgentinaEntre RíosCamping Grünwald, Villa Paranacito2Diego Oscar
215401017/09/2024ArgentinaEntre RíosCampo paranacito, Villa Paranacito11Gabriel Carbajales
214836007/09/2024ArgentinaEntre RíosCampo paranacito, Villa Paranacito5Gabriel Carbajales
214105404/09/2024ArgentinaEntre RíosVilla Paranacito4Diego Oscar
213344013/08/2024ArgentinaEntre RíosCampo paranacito, Villa Paranacito1Gabriel Carbajales
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 06/04/2026.