Gal Oya Wildlife: What You Will Actually See

Chital (Spotted Deer) Common

Axis axis

The prey base the whole leopard story rests on, and the animal whose alarm call tells you where the cat is.

Where: Grassland and shoreline. Best: Year round.

Toque Macaque Common Endangered

Macaca sinica

A small endemic monkey with a swirl of hair on the crown arranged like a cap, and the most studied primate on the island.

Where: Forest edge along the reservoir shore and around the entrance. Best: Year round.

Asian Elephant Regular Endangered

Elephas maximus

The largest land animal in Asia, and a genuinely wild one is worth seeking out over the camp elephants most tourists meet.

Where: Swimming between islands on the Senanayake Samudraya reservoir, seen from a boat. Best: March to July. The only place in Asia where elephants are regularly watched swimming, trunks up like snorkels. A boat changes the sightline completely.

Golden Jackal Regular

Canis aureus

The dry zone's opportunist, trotting along a track at dawn and howling in chorus at dusk so the whole park knows where it is.

Where: Shoreline and track margins at either end of the day. Best: Year round.

Tufted Grey Langur Regular Near Threatened

Semnopithecus priam

Long-limbed, silver-grey and black-faced, sitting in the open on a ruin or a track edge in every dry zone park.

Where: Riverine and shoreline forest. Best: Year round.

Wild Water Buffalo Regular Endangered

Bubalus arnee

Wide-swept horns spanning further than any other bovid, on an animal that is genuinely dangerous and genuinely rare in its true wild form.

Where: Marsh and reservoir margins, seen from the boat. Best: March to July.

Indian Flying Fox Occasional

Pteropus giganteus

A fruit bat with a metre and a half of wingspan, hanging in noisy thousands from a tree in the middle of town.

Where: Roost trees near the reservoir, streaming out at dusk. Best: Year round.

Ruddy Mongoose Occasional

Urva smithii

A big reddish mongoose that carries its black-tipped tail curled up over its back as it crosses a track.

Where: Crossing tracks and working the scrub edge. Best: Year round.

Sloth Bear Rare Vulnerable

Melursus ursinus

A shaggy, long-clawed insect specialist that vacuums termites out of a mound loudly enough to hear from fifty metres.

Where: Forest and rock outcrops around the reservoir. Best: June and July, when the palu fruit ripens.

Sri Lankan Leopard Very rare Endangered

Panthera pardus kotiya

The largest leopard subspecies in the world, and on this island it is the top predator, which changes how it behaves.

Where: Rock outcrops and forest above the reservoir. Best: March to July. Gal Oya's leopards are far less habituated to vehicles than Yala's, which cuts both ways.

Indian Peafowl Common

Pavo cristatus

Wild, and behaving like a wild bird: displaying on a termite mound at dawn with leopards in the same scrub.

Where: Open woodland along the shoreline. Best: Year round.

Spot-billed Pelican Common Near Threatened

Pelecanus philippensis

A pelican that fishes the ancient irrigation tanks, and one of the few large waterbirds doing better now than it was.

Where: The reservoir and its islands. Best: Year round.

Black-headed Ibis Regular Near Threatened

Threskiornis melanocephalus

White body, bare black head and neck, and a bill built for finding what it cannot see.

Where: Shallow margins and the flooded grass at the reservoir edge. Best: Year round.

Grey-headed Fish Eagle Regular Near Threatened

Icthyophaga ichthyaetus

Sits low over the water on a dead branch for hours, then drops feet first and comes up with a fish half its own weight.

Where: Dead trees standing in the reservoir. Best: Year round. The drowned forest gives it more perches than anywhere else in the country.

Pied Kingfisher Regular

Ceryle rudis

The largest bird in the world that can hover in still air with no wind to help it, which is how it fishes open water no perch reaches.

Where: Hovering over the reservoir shallows, easily watched from the boat. Best: Year round.

Sri Lanka Junglefowl Regular

Gallus lafayettii

The national bird, and the wild ancestor's cousin: a jungle cockerel with a yellow-centred red comb found nowhere else on earth.

Where: Forest edge and track sides at first light. Best: Year round.

Bronze-winged Jacana Occasional

Metopidius indicus

Toes so long it walks across floating leaves, and a breeding system in which the female holds the territory and the males do all the work.

Where: Walking on floating vegetation in the quiet bays. Best: Year round.

Brown Fish Owl Occasional

Ketupa zeylonensis

A big owl with bare unfeathered legs, because feathers are a liability when you fish with your feet.

Where: Tall trees on the shoreline and the islands, at dusk. Best: Year round.

Cotton Pygmy Goose Occasional

Nettapus coromandelianus

One of the smallest waterfowl on earth, nesting in tree holes and sitting out on lily pads.

Where: Lotus and floating weed in the sheltered arms of the reservoir. Best: Year round.

Malabar Pied Hornbill Occasional Near Threatened

Anthracoceros coronatus

The island's big hornbill, sealing the female into a tree hollow behind a wall of mud for the whole nesting period.

Where: Large fruiting trees in the forest around the reservoir. Best: Year round.

Asian Water Monitor Common

Varanus salvator

A dragon sized lizard that swims canals and city parks, second only to the Komodo dragon in length.

Where: The reservoir shoreline and the island margins, seen from the boat. Best: Year round.

Oriental Garden Lizard Common

Calotes versicolor

The everyday garden lizard whose breeding males flush blood red about the head, earning the name bloodsucker.

Where: Scrub and woodland edge. Best: Year round.

Sri Lankan Common Skink Common

Eutropis lankae

The bronze skink basking on every wall, ruin and hotel lawn in the country turned out in 2020 to be an endemic species, not the Indian one everybody had been calling it.

Where: Rock, track verges and open ground. Best: Year round.

Bengal Monitor Regular

Varanus bengalensis

A dry-country monitor that climbs well, digs constantly and eats essentially anything smaller than itself.

Where: Dry forest and open scrub away from the water. Best: Year round.

Checkered Keelback Regular

Fowlea piscator

The snake you will actually see in Sri Lanka, hunting fish in a paddy channel in broad daylight.

Where: Reservoir shallows and the feeder channels. Best: Year round.

Mugger Crocodile Regular Vulnerable

Crocodylus palustris

The broadest snout of any living crocodile, and in one Sri Lankan park block there are more of them per square kilometre than anywhere else on earth.

Where: The reservoir margins and inflow channels. Best: Year round.

Indian Rock Python Occasional Near Threatened

Python molurus

Sri Lanka's largest snake, and in the dry season it lies out at the edge of a shrinking waterhole where every animal in the park has to come.

Where: Reservoir margins and the wooded island edges. Best: Year round.

Indian Star Tortoise Occasional Vulnerable

Geochelone elegans

The most trafficked tortoise on earth, and the Sri Lankan animals are the biggest and the most boldly starred of the lot.

Where: Open scrub and grassy ground. Best: Year round, most active after rain.

Painted-lip Lizard Occasional

Calotes ceylonensis

A dry zone endemic with a red stripe painted along its upper lip, and when it is alarmed the stripe flashes white.

Where: Shaded wooded ground near the shore. Best: Year round.

Asian Common Toad Common

Duttaphrynus melanostictus

The ubiquitous warty toad of doorsteps and gardens, hoovering up insects under every night light.

Where: Building surrounds and shoreline scrub after dark. Best: Year round.

Skittering Frog Common

Euphlyctis cyanophlyctis

Disturbed, it does not dive. It skips across the surface like a flat stone, and it can launch from open water with nothing to push against.

Where: Reservoir shallows and the feeder channels. Best: Year round.

Indian Mottled Eel Rare Near Threatened

Anguilla bengalensis

Spends fifteen years in a Sri Lankan river, then swims to the open Indian Ocean to spawn once and die.

Where: Margins of the Senanayake Samudraya and its feeder rivers. Best: Year round, after dark.

No free photograph of a living Indian mottled eel exists. The image is a nineteenth century scientific plate from Francis Day's The Fishes of India, cropped to the head.

Crimson Rose Common Near Threatened

Pachliopta hector

Flies slowly and in the open because it is poisonous and every predator on the island knows it.

Where: Flowering scrub along the shore and the approach tracks. Best: Year round.

Blue Tiger Regular

Tirumala limniace

Migrates in drifting rivers of thousands, and roosts at night in trees hung solid with butterflies.

Where: Woodland edge and the reservoir margins. Best: February to April.

Common Picture Wing Regular

Rhyothemis variegata

Flies like a butterfly, not a dragonfly, on wings washed gold and black.

Where: Margins of the Senanayake Samudraya and its inlets. Best: Year round.

Golden Orb-weaver Common

Nephila pilipes

A giant black-and-yellow spider spinning webs of golden silk strong enough to snare small birds.

Where: Webs slung between trees along the forest edge. Best: Year round.

Signature Spider Common

Argiope anasuja

Writes a bold zigzag across the middle of its own web, and nobody is entirely sure why.

Where: Scrub and shoreline vegetation. Best: Year round.

Giant Forest Scorpion Occasional

Heterometrus swammerdami

Among the largest scorpions on earth, and its sting is milder than a bee's.

Where: Under logs and stones on the forest floor at night. Best: Year round.

Giant Freshwater Prawn Occasional

Macrobrachium rosenbergii

Claws longer than its body, and it has to reach the sea to breed.

Where: Shallow margins of the Senanayake Samudraya and its feeder rivers. Best: Year round, after dark.