Phrynops hilarii
Silhouette: Andy Wilson · PhyloPic
In 3 days ~70% in a week >90%
Phrynops hilarii, also commonly known as Hilaire’s side-necked turtle and Hilaire's toadhead turtle, is a species of freshwater turtle in the family Chelidae. The species is endemic to South America. The specific name, hilarii, is in honor of French zoologist Isidore Geoffroy Saint-Hilaire.
Phrynops hilarii is found in southern Brazil (Santa Catarina and Rio Grande do Sul), southward and westward into Uruguay and Argentina, and possibly also in Paraguay and Bolivia. Phrynops hilarii inhabits streams, lakes, and swamps with abundant aquatic vegetation and soft bottoms.
Phrynops hilarii has an oval, flattened carapace, with a maximum straight-line length of approximately 40 cm (16 in), weighing approximately 5 kg (11 lb). The carapace is usually dark brown, olive, or gray, with a yellow border. The head is large and flat, gray to olive above, with a pointed snout and two bicolored chin barbels. There is a black band on each side of the head, which comes out of the muzzle and passes over the eyes, going up to the neck.
An omnivorous species, P. hilarii mainly feeds on arthropods, with a preference for... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rosario | 🇦🇷 Argentina | |
| 2 | Buenos Aires | 🇦🇷 Argentina | |
| 3 | Porto Alegre | 🇧🇷 Brazil | |
| 4 | Cordoba | 🇦🇷 Argentina | |
| 5 | Montevideo | 🇺🇾 Uruguay | |
| 6 | São Paulo | 🇧🇷 Brazil |
No species of the same family or order lives in Porto Alegre, so these are its closest relatives here: other reptiles.
Likely
About 40% of wildlife watchers report a Hilaire’s Toadhead Turtle sighting in Porto Alegre on a given day, based on 80 verified sightings from GBIF citizen-science data. It is the most-seen of the 7 reptiles we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
May and July
In those months about 50% of wildlife watchers report a Hilaire’s Toadhead Turtle in Porto Alegre on a given day, against about 20% in June and October, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Hilaire’s Toadhead Turtle sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 6
Of the 6 cities where we can rate Hilaire’s Toadhead Turtle sightings, Porto Alegre ranks 3rd at about 40%. The best odds are in Rosario (Argentina, about 60%) and Buenos Aires (Argentina, about 40%).
GBIF citizen-science records
It is estimated from how often the Hilaire’s Toadhead Turtle is recorded against all the reptiles logged in Porto Alegre (80 verified sightings), 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.
