Black Leaf Monkey
Black Leaf MonkeyBlack Leaf MonkeyBlack Leaf MonkeyBlack Leaf Monkey

Black Leaf Monkey

Semnopithecus johnii

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered Endemic
70–80% · Very likely
overall probability at Periyar National Park
31 Verified records at Periyar National Park
January Best month highest sighting rate
🌅 Crepuscular When it's active at dawn and dusk

The Nilgiri langur (Semnopithecus johnii) is an Asian langur of the Old World monkey. It has glossy, black fur and an orangey-golden brown, hair-like mane on its head. Females have a white patch of fur on the inner thigh. It typically lives in troops of nine to ten individuals, with or without offspring, depending on seasonality. Its diet consists of fruits, shoots and leaves. It is listed as vulnerable on the IUCN Red List and is threatened by habitat destruction and poaching for its body parts, thought to supposedly contain aphrodisiac properties. Wikipedia →

70–80% of wildlife watchers report a Black Leaf Monkey sighting in Periyar National Park, based on 31 days of visitor records from GBIF citizen-science data.

Closest Relatives at Periyar National Park

Bonnet Macaque
VU Endemic

Bonnet Macaque

☀️ Diurnal Mammal

Macaca radiata

50–60% · Likely
Lion-tailed Macaque
EN Endemic

Lion-tailed Macaque

☀️ Diurnal Mammal

Macaca silenus

Insufficient data

📅 Monthly Probability

80–90
Jan
70–80
Feb
60–70
Mar
60–70
Apr
70–80
May
40–50
Jun
50–60
Jul
50–60
Aug
50–60
Sep
70–80
Oct
50–60
Nov
70–80
Dec

🌅 When They're Spotted

Most active at dawn and dusk · across all parks (global)

🌅Crepuscular
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Periyar National Park 🇮🇳 India
70–80%
2 Eravikulam National Park 🇮🇳 India
30–40%
3 Mudumalai National Park 🇮🇳 India
Insufficient data
4 Bandipur National Park 🇮🇳 India
Insufficient data
5 Nagarhole National Park 🇮🇳 India
Insufficient data

Quick answers

What are the chances of seeing a Black Leaf Monkey in Periyar National Park?

About 70% of wildlife watchers report a Black Leaf Monkey sighting in Periyar National Park, based on 31 days of visitor records from GBIF citizen-science data.

When is the best time to see Black Leaf Monkey in Periyar National Park?

January has the highest sighting rate for Black Leaf Monkey in Periyar National Park in our monthly data.

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