Avahi laniger
In 3 days ~90% in a week >90%
The eastern woolly lemur (Avahi laniger), also known as the eastern avahi or Gmelin's woolly lemur, is a species of woolly lemur native to eastern Madagascar, where it lives in the wet tropical rainforest at low elevations along the eastern coast of the island or they can also inhabit the northern tip of the island with other species. The woolly lemur name refers to their thick, tightly curled hair, whereas their generic name avahi refers to their high-pitched defensive call. The eastern woolly lemur almost has an owl-look with its large eyes, small rounded head, and ears that are mostly hidden. This nocturnal animal weighs 1.0–1.3 kg (2.2–2.9 lb) and reaches a length of 27–29 cm (11–11 in) with a tail of 33–37 cm (13–15 in). Its diet consists mainly of leaves and buds with fruits, flowers, and bark.
Eastern woolly lemurs live in monogamous pairs together with their offspring. The eastern woolly lemur's breeding season ranges from March to May with the baby lemurs being born around August to September. Other lemur species that live in the same rainforests as eastern woolly lemur are the diademed sifaka (Propithecus diadema) and the red-bellied lemur (Eulemur rubriventer). In southeastern rainforests, sympatric lemur species of A. meridionalis are the brown mouse lemur (Microcebus rufus), the greater dwarf lemur (Cheirogaleus major), the fat-tailed dwarf lemur (Cheirogaleus medius) and the collared brown lemur (Eulemur collaris) in Sainte Luce Forest, and the southern lesser bamboo lemur (Hapalemur meridionalis) in Mandena Forest.
According to one study, a male lemur rarely interacts with more than one other individual when sleeping, traveling or grooming. At night, he would spend about 40% of the time with his partner either grooming or resting. Eastern woolly lemurs have preferences on where they sleep. They prefer to sleep on branches or in dense vegetation at an average height of 3 m.
As of 2020, the eastern woolly lemur continues to exist; however, based on a 2000 study, the entire lemur population might be endangered if the forests continues to "disappear at a disastrous rate". This could be due to many reasons, for example deforestation and forest degradation. Wikipedia →
Recording0:02
Madagascar · 2024
© Brendan O'Loughlin · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mantadia National Park | 🇲🇬 Madagascar |
More parks will be added in future updates.
Likely
About 60% of wildlife watchers report a Gmelin's Woolly Lemur sighting in Mantadia National Park on a given day, based on 99 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 6th most-seen of the 12 mammals we can rate there. Over three days the chance rises to about 90%, and over a week to over 90%, if each day is a fresh chance.
August
In that month about 80% of wildlife watchers report a Gmelin's Woolly Lemur in Mantadia National Park on a given day, against about 10% in March, the lowest month. That is one of Mantadia National Park's driest months, with about 60 mm of rain against 340 mm in January.
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Gmelin's Woolly Lemur sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Only Mantadia National Park, in our data
Mantadia National Park is the only park on Wallace's Line with enough records to rate Gmelin's Woolly Lemur sightings: about 60% of wildlife watchers there report one on a given day.
Same family: Indriidae
The closest relatives of the Gmelin's Woolly Lemur that you can see in Mantadia National Park (family Indriidae, Indris, Sifakas, and Woolly Lemurs) are Indri (about 90%) and Diademed Sifaka (about 80%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gmelin's Woolly Lemur is recorded against all the mammals logged in Mantadia National Park (99 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.
