Lowland Hump-nosed Viper

Lowland Hump-nosed Viper

Hypnale zara

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
40–50% · Likely
overall probability at Sinharaja Forest Reserve

Closest Relatives at Sinharaja Forest Reserve

Hump-nosed Viper
LC

Hump-nosed Viper

Reptile

Hypnale hypnale

Insufficient data
Ceylon Pit Viper

Ceylon Pit Viper

🌅 Crepuscular Reptile

Craspedocephalus trigonocephalus

80–90% · Very likely
Russell's Viper
LC

Russell's Viper

Reptile

Daboia russelii

10–20% · With luck

📅 Monthly Probability

30–40
Jan
30–40
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 46% of visitor-days record a Lowland Hump-nosed Viper sighting in Sinharaja Forest Reserve, based on 49 observer-days of citizen-science data from GBIF.

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.

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