Otolemur crassicaudatus
Silhouette: Joseph Wolf and T. Michael Keesey · PhyloPic
In 3 days ~20% in a week ~50%
The brown greater galago (Otolemur crassicaudatus), also known as the large-eared greater galago or thick-tailed galago, is a nocturnal primate, the largest in the family of galagos. As opposed to smaller galago species it would climb, walk or run rather than leap.
Two subspecies of Otolemur crassicaudatus are recognised: O. c. crassicaudatus The IUCN considers the silvery greater galago as a third subspecies, O. c. monteiri. Other sources treat it as a separate species, though with "misgivings". The IUCN Red List assesses all three forms individually as Least Concern.
This species has a rounded head with a short, wide snout, very large ears that can be moved independently and relatively large forward binocular eyes. They possess flat thickened skin pads at the ends of their fingers and toes for grasping limbs. The fingers are long and toes are flattened with flattened nails. The dentition formula is I 2/2, C 1/1, P3 3/3, M3/3.
The thick fur is highly variable in color, depending on the subspecies: O. c. crassicaudatus exhibits dorsal pelage ranging from buff to gray extending to the face, flanks and limbs. The ventral fur... Wikipedia →
Call0:22
Zambia · 2023
© Marc Anderson · XC959797 · CC BY-NC-ND 4.0
Recording0:20
Mozambique · 2017
© Yvonne A. de Jong · iNaturalist · CC BY-NC-SA 4.0
Recording0:09
South Africa · 2022
© eliegaget · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lake Mburo National Park | 🇺🇬 Uganda | |
| 2 | Gorongosa National Park | 🇲🇿 Mozambique | |
| 3 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 4 | Kruger National Park | 🇿🇦 South Africa | |
| 5 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 6 | Masai Mara National Reserve | 🇰🇪 Kenya |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Memphis Zoo | 🇺🇸 United States | |
| 2 | London Zoo | 🇬🇧 United Kingdom |
With luck
About 10% of wildlife watchers report a Brown Greater Galago sighting in Masai Mara National Reserve on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 34th most-seen of the 40 mammals we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
February and October
In those months about 20% of wildlife watchers report a Brown Greater Galago in Masai Mara National Reserve on a given day, against under 5% in March, May–June, September and November–December, the lowest months.
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Brown Greater Galago sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
6th of 6
Of the 6 parks where we can rate Brown Greater Galago sightings, Masai Mara National Reserve ranks 6th at about 10%. The best odds are in Lake Mburo National Park (Uganda, about 20%), Gorongosa National Park (Mozambique, about 20%) and uMkhuze Game Reserve (South Africa, about 20%).
GBIF citizen-science records
It is estimated from how often the Brown Greater Galago is recorded against all the mammals 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.
