Barely disturbed by a visitor's footsteps, the Caligo eurilochus, also known as the owl butterfly, keeps its wings semi-open, partially revealing its large, eye-like ocelli. This remarkable imitation, inspired by nocturnal birds of prey, is not just aesthetic: it constitutes an effective defense strategy against predators, who hesitate to attack what they mistake for a threatening gaze.

Native to the tropical forests of Central and South America, this twilight butterfly is distinguished by its slow flight, often observed in the shade of undergrowth or in humid greenhouses. Its impressive size and calm demeanor make it a favorite with visitors.

Despite its sober brown wings on the outside, their undersides reveal bluish or purple reflections, which can only be seen in oblique light. The Caligo is not a full-sun butterfly: it prefers the cool hours of the morning or late afternoon, which reinforces its discreet and mysterious aura.

A silent witness of the plant world, on the border between camouflage and illusion