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South AmericaBuff-necked ibis
Theristicus caudatus
The Buff-necked ibis (Theristicus caudatus) is a bird found in Brazil, Colombia, Argentina and Bolivia. Open land and grasslands across South America. It eats insects and other small invertebrates, reptiles and frogs and small mammals and birds. The IUCN Red List lists it as Least Concern.
See the Buff-necked ibis on the 3D globe →| Scientific name | Theristicus caudatus |
|---|---|
| Region | South America |
| Found in | Brazil, Colombia, Argentina and Bolivia |
🏡 Where the Buff-necked ibis lives
Open land and grasslands across South America.
🍽️ What it eats
- 🐛 Insects & bugs70%
- 🦎 Reptiles & frogs20%
- 🐭 Mammals & birds10%
A rough guide to its diet over a year. Source: EltonTraits (Wilman et al. 2014).
Conservation status
Hear the Buff-necked ibis
Recorded by Fabrício Grigolin (CC BY-NC-SA 4.0), xeno-canto XC1062328. Trimmed to a few seconds.
Questions about the Buff-necked ibis
Where does the Buff-necked ibis live?
The Buff-necked ibis lives in Brazil, Colombia, Argentina and Bolivia. Open land and grasslands across South America.
What does the Buff-necked ibis eat?
insects and other small invertebrates (about 70%), reptiles and frogs (about 20%), small mammals and birds (about 10%). These are rough shares of its diet over a year, from the EltonTraits database.
Is the Buff-necked ibis endangered?
There are plenty of these birds. Its IUCN Red List category is Least Concern.
More birds from South America
Sources: IUCN Red List (via Wikidata), EltonTraits 1.0 (Wilman et al. 2014), GBIF sightings for countries, Wikipedia. Last updated 2026-10-19.