Giant cowbird
Molothrus oryzivorus (J. F. Gmelin, 1788)
The giant cowbird (Molothrus oryzivorus) is a species in the family Icteridae, order Passeriformes. Recorded adults weigh 155.5 g to 208 g. Its IUCN Red List status is Least Concern.

Quick facts about the giant cowbird
- Weight
- 155.5 g – 208 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Omnivoresrc for Diet
- Main food
- Not recorded
- Habitat
- forestsrc for Habitat
- Young per litter or clutch
- Not recorded
- Lifestyle
- Terrestrialsrc for Lifestyle
- Migration
- Sedentarysrc for Migration
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the giant cowbird live?
Not recorded
What is the giant cowbird?
The giant cowbird (Molothrus oryzivorus) is a large passerine bird in the New World family Icteridae. It breeds from southern Mexico south to northern Argentina, and on Trinidad and Tobago. It may have relatively recently colonised the latter island. It is a brood parasite and lays its eggs in the nests of other birds.
From the Wikipedia article “Giant cowbird” (en.wikipedia.org/w/index.php?title=Giant_cowbird&oldid=1320585840), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
Is the giant cowbird endangered?
The giant cowbird is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.
How is the giant cowbird classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderPasseriformes
- familyIcteridae
- genusMolothrus
- SpeciesMolothrus oryzivorus (J. F. Gmelin, 1788)
Synonyms Molothrus oryzivora, Oriolus oryzivorus, Scaphidura oryzivora, Scaphidura oryzivora, Scaphidura oryzivora, Scaphidura oryzivora, Scaphidura oryzivora
Other names and names in other languages (32)
- شحرور البقر العملاقArabic
- vaquer gegantCatalan
- vlhovec velkýCzech
- KæmpekostærDanish
- RiesenkuhstärlingGerman
- giganta bovikteroEsperanto
- Tordo giganteSpanish
- Chamón giganteSpanish
- vaquero giganteSpanish
- Vaquero GrandeSpanish
- kaulusturpiaaliFinnish
- Vacher géantFrench
- veliki čvorkašCroatian
- óriás gulyajáróHungarian
- Vaccaro giganteItalian
- オオコウウチョウJapanese
- didysis trupialasLithuanian
- Grote KoevogelDutch
- stortrupialNorwegian
- starzyk wielkiPolish
- IraúnaPortuguese
- iraúna-grandePortuguese
- vaqueiro-gigantePortuguese
- Большой трупиалRussian
- Большая воловья птицаRussian
- zanášač veľkýSlovak
- Džinovska kravaricaSerbian
- jättekostareSwedish
- Büyük inekkuşuTurkish
- вашер великийUkrainian
- 巨牛鸝Chinese
- 巨牛鹂Chinese
Catalogue of LifeWikipediaiNaturalistTAXREFWikidataIUCN Red List
Relatives of the giant cowbird
Other species in the same genus Molothrus.

Brown-headed cowbird
Molothrus ater

Shiny cowbird
Molothrus bonariensis

Screaming cowbird
Molothrus rufoaxillaris

Bronzed cowbird
Molothrus aeneus

Bronze-brown cowbird
Molothrus armenti
CompareGiant cowbird vs Brown-headed cowbirdGiant cowbird vs Shiny cowbirdGiant cowbird vs Screaming cowbirdGiant cowbird vs Bronzed cowbird
Common questions
Answered only where our data holds the answer.
How big is the giant cowbird?
An adult giant cowbird weighs 155.5 g – 208 g, according to values recorded on Wikidata.
Is the giant cowbird endangered?
The giant cowbird is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
What kind of animal is the giant cowbird?
The giant cowbird (Molothrus oryzivorus) belongs to the family Icteridae in the order Passeriformes.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - AVONET: morphological, ecological and geographical data for all birds · CC BY 4.0 · v7
Tobias, J.A. et al. (2022) AVONET: morphological, ecological and geographical data for all birds. Ecology Letters 25: 581–597. https://doi.org/10.1111/ele.13898. Data: https://doi.org/10.6084/m9.figshare.16586228.v7 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Giant cowbird (Molothrus oryzivorus). Retrieved from https://creaturedata.com/animals/giant-cowbird
“Giant cowbird (Molothrus oryzivorus).” CreatureData, 2026, https://creaturedata.com/animals/giant-cowbird.
@misc{giant_cowbird_2026,
title = {Giant cowbird (Molothrus oryzivorus)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/giant-cowbird},
note = {Data as of 2026-11-11}
}