Sri Lanka wood frog

Sri Lanka wood frog

Hydrophylax gracilis

20–30% · Possible
overall probability at Wilpattu National Park
6 Verified records at Wilpattu National Park
September Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

Hydrophylax gracilis, also known as Gravenhorst's frog, Gravenhorst's golden-backed frog, and Sri Lanka wood frog, is a species of frog in the family Ranidae. It is endemic to Sri Lanka. Hydrophylax gracilis occurs in marshes, agricultural land, grassland, and bush forests at elevations below 600 m (2,000 ft). Adult frogs are semi-arboreal and semi-aquatic, whereas the tadpoles live in stagnant waters. H. gracilis is a common species that can be threatened by loss of its wetland habitats through wetland reclamation, urbanization, and aquatic agrochemical pollution. However, it is present in many protected areas. Wikipedia →

20–30% of wildlife watchers report a Sri Lanka wood frog sighting in Wilpattu National Park, based on 6 days of visitor records from GBIF citizen-science data.

Closest Relatives at Wilpattu National Park

Chunam Tree Frog
LC

Chunam Tree Frog

🌅 Crepuscular Amphibian

Polypedates maculatus

40–50% · Likely
Common skittering frog
LC

Common skittering frog

☀️ Diurnal Amphibian

Euphlyctis cyanophlyctis

40–50% · Likely
Indian Five-Fingered Frog

Indian Five-Fingered Frog

🌅 Crepuscular Amphibian

Euphlyctis hexadactylus

30–40% · Possible
Rohan's Globular Frog
LC

Rohan's Globular Frog

🌅 Crepuscular Amphibian

Uperodon rohani

30–40% · Possible
Common Indian Cricket Frog
LC

Common Indian Cricket Frog

☀️ Diurnal Amphibian

Minervarya agricola

20–30% · Possible
Common Hourglass Tree Frog
LC

Common Hourglass Tree Frog

☀️ Diurnal Amphibian

Polypedates cruciger

20–30% · Possible
Common Indian Toad
LC

Common Indian Toad

☀️ Diurnal Amphibian

Duttaphrynus melanostictus

Insufficient data
Jerdon's Bullfrog
LC

Jerdon's Bullfrog

☀️ Diurnal Amphibian

Hoplobatrachus crassus

20–30% · Possible
Sri Lankan Bullfrog
LC

Sri Lankan Bullfrog

🌅 Crepuscular Amphibian

Uperodon taprobanicus

10–20% · With luck
Ornate Narrow-mouthed Toad
LC

Ornate Narrow-mouthed Toad

Amphibian

Microhyla ornata

Insufficient data
Schneider's Toad
LC Endemic

Schneider's Toad

Amphibian

Duttaphrynus scaber

Insufficient data
Hill Cricket Frog
LC

Hill Cricket Frog

Amphibian

Minervarya syhadrensis

Insufficient data

📅 Monthly Probability

5–10
Jan
20–30
Feb
<5
Mar
30–40
Apr
5–10
May
30–40
Jun
20–30
Jul
30–40
Aug
30–40
Sep
5–10
Oct
5–10
Nov
5–10
Dec

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙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 Wilpattu National Park 🇱🇰 Sri Lanka
20–30%
2 Sinharaja Forest Reserve 🇱🇰 Sri Lanka
10–20%
3 Minneriya National Park 🇱🇰 Sri Lanka
Insufficient data
4 Yala National Park 🇱🇰 Sri Lanka
Insufficient data

Quick answers

What are the chances of seeing a Sri Lanka wood frog in Wilpattu National Park?

About 21% of wildlife watchers report a Sri Lanka wood frog sighting in Wilpattu National Park, based on 6 days of visitor records from GBIF citizen-science data.

When is the best time to see Sri Lanka wood frog in Wilpattu National Park?

September has the highest sighting rate for Sri Lanka wood frog in Wilpattu National Park in our monthly data.

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