Lowland Hump-nosed Viper

Lowland Hump-nosed Viper

Hypnale zara

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
40–50% · Likely
overall probability at Sinharaja Forest Reserve
49 Verified records at Sinharaja Forest Reserve
November Best month highest sighting rate
🌅 Crepuscular When it's active at dawn and dusk

Hypnale zara, the lowlands hump-nosed pit viper, is a venomous pit viper species endemic to Sri Lanka. It is distinguished from Hypnale nepa by variably colored body and less upcurved snout. No subspecies are currently recognized. Wikipedia →

40–50% of wildlife watchers report a Lowland Hump-nosed Viper sighting in Sinharaja Forest Reserve, based on 49 days of visitor records from GBIF citizen-science data.

📅 Monthly Probability

30–40
Jan
20–30
Feb
20–30
Mar
30–40
Apr
50–60
May
30–40
Jun
40–50
Jul
60–70
Aug
50–60
Sep
40–50
Oct
70–80
Nov
40–50
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 Sinharaja Forest Reserve 🇱🇰 Sri Lanka
40–50%

More parks will be added in future updates.

Quick answers

What are the chances of seeing a Lowland Hump-nosed Viper in Sinharaja Forest Reserve?

About 45% of wildlife watchers report a Lowland Hump-nosed Viper sighting in Sinharaja Forest Reserve, based on 49 days of visitor records from GBIF citizen-science data.

When is the best time to see Lowland Hump-nosed Viper in Sinharaja Forest Reserve?

November has the highest sighting rate for Lowland Hump-nosed Viper in Sinharaja Forest Reserve in our monthly data.

← Back to Sinharaja Forest Reserve