Reptiles Active at night

Garden Tree Boa

Corallus hortulana

iNaturalist Wikipedia

The Garden Tree Boa is nature's most colorful canopy dweller, exhibiting a range of vibrant hues from sunset orange to mossy grey. A nocturnal specialist, this slender snake uses advanced heat-sensing pits to navigate and hunt in the dark South American forests.

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Quick Identification

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Size

1.5 to 2.0 meters (5 to 6.5 feet) in length; 0.5 to 1.5 kg (1.1 to 3.3 lbs)

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Colors

Highly polymorphic; can be solid or patterned in shades of grey, brown, olive, bright yellow, orange, or brick red.

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Key Features

Extremely slender body with a large, bulbous head distinct from the neck
Deep heat-sensing pits along the upper and lower labial scales
Highly variable coloration and patterning
Large, prominent eyes with vertical pupils

When You’ll See Them

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Activity pattern Active at night

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Peak hours 8 PM - 3 AM

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Season Year-round

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Diet Carnivorous predator that eats small mammals (including bats and rodents), birds, and lizards caught while hanging from branches.

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Habitat Arboreal specialist found in tropical rainforests, secondary growth forests, forest edges, and lush suburban gardens.

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Where Does the Garden Tree Boa Live?

This stunning snake is native to the tropical reaches of South America, where it thrives across the vast Amazon Basin and the Guiana Shield. Its primary range covers Brazil, Colombia, Peru, Ecuador, Venezuela, Guyana, Suriname, and French Guiana. While it is a specialist of the deep jungle, it has successfully adapted to human-altered landscapes, making it a frequent visitor to riverside orchards and residential gardens that offer sufficient vertical cover.

Basemap © OpenStreetMap contributors

8 Countries

7.5M km² Range

Least Concern Conservation

BR Brazil CO Colombia PE Peru EC Ecuador VE Venezuela GY Guyana SR Suriname French Guiana

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iNaturalist / Verified observation data

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Behavior

The Garden Tree Boa is a master of the vertical world, spending the vast majority of its life high above the ground. Primarily nocturnal, these snakes spend their daylight hours coiled tightly in the safety of tree hollows, dense bromeliads, or thick vine tangles. As night falls, they become active hunters, moving with surprising agility through the canopy using their strong prehensile tails as an anchor.

While they are non-venomous, they are known for their feisty temperament. When threatened, they often form a tight defensive ball or strike repeatedly with an impressive reach. In a garden or backyard setting, they are generally shy and will avoid human interaction, though they are highly valued by locals for their ability to naturally control rodent and bat populations.

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Camera Tips

Capturing the Garden Tree Boa on camera requires a shift in perspective—literally. Because these snakes are strictly arboreal, a ground-mounted trail camera is unlikely to ever see one. Mount your camera 5 to 10 feet up in a tree, focusing on horizontal branches or 'bridges' that connect different parts of the canopy. Areas near flowering trees that attract bats or nesting birds are prime locations for an ambush-hunting boa.

Since these snakes are active in total darkness, high-quality infrared (IR) capability is a must. Use 'No-Glow' IR flash settings if possible, as these snakes have sensitive heat-detecting pits and may be startled by or investigate the faint red glow of standard IR. Because they often remain motionless for hours while waiting for prey, use a high-sensitivity trigger or time-lapse mode to ensure you catch them during their slow, methodical movements between hunting perches.

For the best results, set your camera to video mode. Watching a Garden Tree Boa navigate the thin branches of a backyard tree using its prehensile tail is far more rewarding than a static image. Look for 'S-curve' body patterns in your footage, which indicate the snake is in a hunting posture. Avoid using artificial baits; instead, focus on providing a diverse garden habitat that attracts the small mammals and birds the boa naturally pursues.

Similar Species

Species that look similar or are commonly confused with Garden Tree Boa.

Emerald Tree Boa

Consistently green with white markings and a much heavier, thicker body compared to the slender, multi-colored Garden Tree Boa.

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Frequently Asked Questions

Garden Tree Boas are strictly nocturnal. They emerge from their daytime hiding spots in tree hollows or dense foliage shortly after sunset to hunt and are most active between 8 PM and 3 AM.

To attract these snakes, you must provide a vertical habitat with plenty of climbing opportunities. Planting native trees, keeping thick vine growth, and maintaining a garden that supports birds and small mammals will provide the food and shelter they need.

Their diet is diverse and includes small mammals like rodents and bats, as well as birds and lizards. They use specialized heat-sensing pits on their lips to find warm-blooded prey in complete darkness.

Yes, they are very common in suburban areas that border forests or contain large gardens and orchards. They are well-adapted to living near humans, provided there are enough trees for them to remain off the ground.

Garden Tree Boas are much more slender and come in many colors (yellow, red, brown, grey), whereas Emerald Tree Boas are typically thick-bodied and a consistent vibrant green with white markings.

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