Theristicus caudatus
Silhouette: Robert Cooke · PhyloPic
In 3 days ~60% in a week ~90%
The buff-necked ibis (Theristicus caudatus), also known as the white-throated ibis, is a fairly large ibis found widely in open habitats of eastern and northern South America. It formerly included the similar black-faced ibis as a subspecies, but that species is almost entirely restricted to colder parts of South America, has a buff (not dark grey) lower chest, and lacks the contrasting large white wing-patches.
The buff-necked ibis was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1781 in his Histoire Naturelle des Oiseaux based on a specimen collected in Cayenne, French Guiana. The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Scolopax caudatus in his catalogue of the Planches Enluminées. The buff-necked ibis is now placed in the genus Theristicus that was erected by the German naturalist Johann Georg Wagler... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Emas National Park | 🇧🇷 Brazil | |
| 2 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 3 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 4 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 5 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 6 | Chapada dos Guimarães National Park | 🇧🇷 Brazil | |
| 7 | Amboró National Park | 🇧🇴 Bolivia | |
| 8 | Iberá National Park | 🇦🇷 Argentina | |
| 9 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 10 | Itatiaia National Park | 🇧🇷 Brazil | |
| 11 | Iguaçu National Park | 🇧🇷 Brazil | |
| 12 | Los Nevados National Natural Park | 🇨🇴 Colombia | |
| 13 | Iguazú National Park | 🇦🇷 Argentina | |
| 14 | Farallones de Cali National Natural Park | 🇨🇴 Colombia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Goiânia | 🇧🇷 Brazil | |
| 2 | Campo Grande | 🇧🇷 Brazil | |
| 3 | Curitiba | 🇧🇷 Brazil | |
| 4 | Brasilia | 🇧🇷 Brazil | |
| 5 | Cali | 🇨🇴 Colombia | |
| 6 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 7 | Campinas | 🇧🇷 Brazil | |
| 8 | Cordoba | 🇦🇷 Argentina | |
| 9 | Belo Horizonte | 🇧🇷 Brazil | |
| 10 | São Paulo | 🇧🇷 Brazil |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Parque das Aves | 🇧🇷 Brazil | |
| 2 | Parc des oiseaux | 🇫🇷 France | |
| 3 | Zoo de Doué | 🇫🇷 France | |
| 4 | Zoological Garden of Belo Horizonte | 🇧🇷 Brazil | |
| 5 | Zoológico de Brasília | 🇧🇷 Brazil | |
| 6 | São Paulo Zoo | 🇧🇷 Brazil | |
| 7 | Temaikén | 🇦🇷 Argentina | |
| 8 | Cologne Zoological Garden | 🇩🇪 Germany | |
| 9 | London Zoo | 🇬🇧 United Kingdom | |
| 10 | Zoo das Aves | 🇧🇷 Brazil | |
| 11 | Aviario Nacional de Colombia | 🇨🇴 Colombia | |
| 12 | Zoológico de Fauna Sudamericana | 🇧🇴 Bolivia | |
| 13 | Parque de la Conservación | 🇨🇴 Colombia | |
| 14 | Cali Zoo | 🇨🇴 Colombia | |
| 15 | Cologne Zoo Aquarium | 🇩🇪 Germany |
Possible
About 30% of wildlife watchers report a Buff-necked Ibis sighting in El Impenetrable National Park on a given day, based on 120 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 55th most-seen of the 219 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
October
In that month about 60% of wildlife watchers report a Buff-necked Ibis in El Impenetrable National Park on a given day, against about 10% in July, the lowest month. December has too few records to rate.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Buff-necked Ibis sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 14
Of the 14 parks where we can rate Buff-necked Ibis sightings, El Impenetrable National Park ranks 4th at about 30%. The best odds are in Emas National Park (Brazil, about 60%), Parque Estadual Encontro das Águas (Brazil, about 30%) and Serra da Canastra National Park (Brazil, about 30%). All parks ranked.
GBIF citizen-science records
It is estimated from how often the Buff-necked Ibis is recorded against all the birds logged in El Impenetrable National Park (120 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
