Anhima cornuta
Silhouette: Edouard Traviés · PhyloPic
In 3 days ~10% in a week ~20%
The horned screamer (Anhima cornuta) is a species of waterfowl that belongs to a relatively small family, the Anhimidae, which occurs in wetlands of tropical South America. There are three screamer species, the other two being the southern screamer and the northern screamer in the genus Chauna. They are related to ducks, geese and swans, which are in the family Anatidae, but have bills looking more like those of Galliformes.
Already known in the 17th century, the horned screamer was described in 1766 by the Swedish naturalist Carl Linnaeus in the twelfth edition of his Systema Naturae. He introduced the binomial name Palamedea cornuta. The horned screamer is now the only species placed in the genus Anhima that was introduced by the French zoologist Mathurin Jacques Brisson in 1760. The specific epithet cornuta is the Latin word for "horned". The German naturalist Georg Marcgrave had used the Latin name Anhima in 1648 for the horned screamer in his Historia naturalis Brasiliae. The name was from the word for the bird in the Tupi language of South America.
The horned screamer is a massive 84–95 cm (33–37.5 in) long, 3–3.5 kg (6.6–7.7 lb) bird, with a... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 2 | Manu National Park | 🇵🇪 Peru | |
| 3 | Tambopata National Reserve | 🇵🇪 Peru | |
| 4 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 5 | Yasuní National Park | 🇪🇨 Ecuador | |
| 6 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 7 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 8 | Iguaçu National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Goiânia | 🇧🇷 Brazil |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Prague Zoo | 🇨🇿 Czechia | |
| 2 | Zoological Garden of Belo Horizonte | 🇧🇷 Brazil | |
| 3 | ZooTampa | 🇺🇸 United States | |
| 4 | Parque Zoológico y Botánico Baradida | 🇻🇪 Venezuela | |
| 5 | Aviario Nacional de Colombia | 🇨🇴 Colombia | |
| 6 | Buin Zoo | 🇨🇱 Chile | |
| 7 | Reid Park Zoo | 🇺🇸 United States | |
| 8 | Ecozoológico San Martín | 🇪🇨 Ecuador | |
| 9 | Zoo El Pantanal | 🇪🇨 Ecuador | |
| 10 | Dallas World Aquarium | 🇺🇸 United States | |
| 11 | Rákosův pavilon | 🇨🇿 Czechia | |
| 12 | Velemlokárium | 🇨🇿 Czechia | |
| 13 | Zooparque Itatiba | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Horned Screamer sighting in Yasuní National Park on a given day, based on 85 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 334th most-seen of the 533 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
October
In that month about 10% of wildlife watchers report a Horned Screamer in Yasuní National Park on a given day, against under 5% in November to September, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Horned Screamer sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 parks where we can rate Horned Screamer sightings, Yasuní National Park ranks 5th at under 5%. The best odds are in Amacayacu National Natural Park (Colombia, about 40%), Manu National Park (Peru, about 20%) and Tambopata National Reserve (Peru, about 10%).
GBIF citizen-science records
It is estimated from how often the Horned Screamer is recorded against all the birds logged in Yasuní National Park (85 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.
