Hoplobatrachus occipitalis
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~20% in a week ~50%
The crowned bullfrog (Hoplobatrachus occipitalis) is a species of frog in the family Dicroglossidae. It is found in the Sub-Saharan Africa (Algeria, Angola, Benin, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Libya, Mali, Mauritania, Morocco, Niger, Nigeria, Rwanda, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Western Sahara, and Zambia).
Its natural habitats are subtropical or tropical moist lowland forest, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, subtropical or tropical dry lowland grassland, subtropical or tropical seasonally wet or flooded lowland grassland, rivers, intermittent rivers, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, freshwater springs, arable land, pastureland, rural gardens, heavily degraded former forest, and ponds.
It is threatened by habitat loss. Wikipedia →
Recording0:15
Mali · 2021
© Louis Beney · iNaturalist · CC BY-NC 4.0
Recording0:05
Kenya · 2010
© probreviceps · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Masai Mara National Reserve | 🇰🇪 Kenya |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Maritime Aquarium at Norwalk | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Crowned bullfrog sighting in Masai Mara National Reserve on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
December
In that month about 20% of wildlife watchers report a Crowned bullfrog in Masai Mara National Reserve on a given day, against under 5% in February–March, May–June and October, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Crowned bullfrog sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Masai Mara National Reserve, in our data
Masai Mara National Reserve is the only park on Wallace's Line with enough records to rate Crowned bullfrog sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Anura
The closest relatives of the Crowned bullfrog that you can see in Masai Mara National Reserve (order Anura, Frogs and Toads) are Common Reed Frog (about 10%), African Common Toad (about 10%) and Anchieta's Ridged Frog (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Crowned bullfrog is recorded against all the amphibians logged in Masai Mara National Reserve (9 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.
