Grass-green tanager
Chlorornis riefferii (Boissonneau, 1840)
The grass-green tanager (Chlorornis riefferii) is a species in the family Thraupidae, order Passeriformes. Recorded adults weigh about 53 g. Its IUCN Red List status is Least Concern.

Quick facts about the grass-green tanager
- Weight
- 53 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Frugivoresrc for Diet
- Main food
- Not recorded
- Habitat
- forestsrc for Habitat
- Young per litter or clutch
- Not recorded
- Lifestyle
- Perchingsrc for Lifestyle
- Migration
- Sedentarysrc for Migration
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the grass-green tanager live?
Not recorded
What is the grass-green tanager?
The grass-green tanager (Chlorornis riefferii) is a small South America bird in the tanager family Thraupidae. It is the only member of the genus Chlorornis.
The grass-green tanager is 20 cm in length and weighs 53g. It lives in and around subtropical and temperate forests in the Andes of Colombia, Ecuador, Bolivia, and Peru at elevations of 1500–3350 m.
It is seen in pairs or in groups of 3-6 individuals. It forages mostly on the upper half of short trees and eats fruits and insects. It is known to perch almost horizontally. Its nest is made of mosses and ferns, and its eggs are gray with light purple-grey dots.
From the Wikipedia article “Grass-green tanager” (en.wikipedia.org/w/index.php?title=Grass-green_tanager&oldid=1379254036), 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 grass-green tanager endangered?
The grass-green tanager 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 grass-green tanager classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderPasseriformes
- familyThraupidae
- genusChlorornis
- SpeciesChlorornis riefferii (Boissonneau, 1840)
Synonyms Chloronis riefferii
Other names and names in other languages (30)
- Grass-green mountain tanagerEnglish
- Grass-green mountain-tanagerEnglish
- tàngara de RiefferCatalan
- tangara papouščíCzech
- tanagr gwyrddWelsh
- GrøntangarDanish
- PapageitangareGerman
- verda montotangaroEsperanto
- Tangara loritoSpanish
- Clorornis patirrojoSpanish
- Tangará LoritoSpanish
- malakiittitangaraFinnish
- Tangara de RiefferFrench
- zelena tangaraCroatian
- Tanagra verderbaItalian
- ワカクサフウキンチョウJapanese
- papūginė tanagraLithuanian
- PapegaaitangareDutch
- grønntanagarNorwegian
- andotanager zielonyPolish
- tangará-papagaioPortuguese
- saíra-verde-claroPortuguese
- Попугаевая танаграRussian
- Попугайная танаграRussian
- tangara hnedolícaSlovak
- grön bergtangaraSwedish
- Yemyeşil TangaraTurkish
- танагра червононогаUkrainian
- 草綠唐納雀Chinese
- 草绿唐纳雀Chinese
Relatives of the grass-green tanager
Other species in the same family Thraupidae.

Paradise tanager
Tangara chilensis

Blue-gray tanager
Thraupis episcopus

Bananaquit
Coereba flaveola

Green-headed tanager
Tangara seledon

Woodpecker finch
Camarhynchus pallidus

Red-crested cardinal
Paroaria coronata
CompareGrass-green tanager vs Paradise tanagerGrass-green tanager vs Blue-gray tanagerGrass-green tanager vs BananaquitGrass-green tanager vs Green-headed tanager
Common questions
Answered only where our data holds the answer.
How big is the grass-green tanager?
An adult grass-green tanager weighs 53 g, according to values recorded on Wikidata.
Is the grass-green tanager endangered?
The grass-green tanager 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 grass-green tanager?
The grass-green tanager (Chlorornis riefferii) belongs to the family Thraupidae 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). Grass-green tanager (Chlorornis riefferii). Retrieved from https://creaturedata.com/animals/grass-green-tanager
“Grass-green tanager (Chlorornis riefferii).” CreatureData, 2026, https://creaturedata.com/animals/grass-green-tanager.
@misc{grass_green_tanager_2026,
title = {Grass-green tanager (Chlorornis riefferii)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/grass-green-tanager},
note = {Data as of 2026-11-11}
}