Where can I see an eyelash viper in Costa Rica?

In humid lowland and foothill rainforest, especially the Caribbean slope around Sarapiquí and La Selva, plus the Arenal area. It coils on heliconia, palm fronds, and low vegetation at forest edge, so a guide walking known trails is how most people find one.

When is the best time to see an eyelash viper?

It is resident year-round and is found mainly on night walks, when it is active and easier to spot. The wetter months, roughly April through November, bring more activity, but a good guide finds them in any season.

Why do eyelash vipers come in different colours?

The species has several colour morphs — bright golden-yellow (the "oropel"), green, and mottled brown — within the same population. Colour doesn’t indicate sex or age; it is genetic variation, so the morph you photograph is luck plus the right site.

When to See the Eyelash Viper in Costa Rica

Bothriechis schlegelii

The best time to see the eyelash viper at Sarapiquí in Costa Rica is Apr–Oct, with the most activity after dark, on night walks. Sightings fall off sharply outside that window, so timing the trip matters as much as the location.

See verified eyelash viper guides

Season: Apr–Oct
Best hours: After dark, on night walks
Top site: Sarapiquí
Difficulty: Moderate

When & where to see it

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Primary regions

Sarapiquí
La Selva
Arenal
Caribbean lowlands

When is the best time to see the eyelash viper?

Eyelash Viper viewing is best Apr–Oct, with the most activity after dark, on night walks. A small arboreal pit viper that coils on heliconia and palm bracts — found on slow night walks, where a guide’s eye for a coiled snake matters more than the season.

Where in Costa Rica should you photograph it?

The most dependable area is the Caribbean lowland rainforest around Sarapiquí and La Selva. Other productive sites include Sarapiquí, La Selva, Arenal, Caribbean lowlands — a guide who knows which is working this week beats picking one off a map.

What camera settings work in Sarapiquí light?

Low, close, and motionless on a leaf: a macro or short telephoto with diffused flash — and never handle or crowd a venomous snake.

Which guides have the highest verified success rate?

We rank specialist guides by their verified eyelash viper sighting rate — real trips, real outcomes, with the sample size shown next to every number. See the ranked guides ↓