Owl Butterfly

With a wingspan of roughly 11 to 15 centimetres, this is one of the largest butterflies in Central America. On the underside of each hindwing sits a dark, yellow-ringed spot the size of a small coin, set in mottled brown that resembles feathers or bark. How the spot works on birds, as a copy of a predator's eye or simply as a bold pattern they avoid, is still being studied.

• Banana growers in parts of Central America treat it as a pest because the caterpillars strip the leaves.
• The genus name Caligo is Latin for darkness or gloom.
• It is among the butterflies most often reared on farms and shown in walk-through butterfly houses around the world.
• Fully grown caterpillars reach roughly 10 centimetres in length.
• The brown chrysalis hangs from a stem or leaf and looks much like a dead leaf.

Owl Butterflies are often crepuscular, flying in dim light.

Habitat: rainforest edge, orchard, and humid woodland

Native range: Central and South America

Fermenting fruit, sap, and juices.

Owl Butterflies are often crepuscular, flying in dim light.

Adults live for several weeks, which is long for a butterfly, and in butterfly houses some last two months or more. The egg, caterpillar and chrysalis stages together take roughly a further two to three months.

After mating, females lay eggs on host plants used by caterpillars. These are chiefly bananas and heliconias. The pale, ribbed eggs are laid in small groups on the leaves, and the young caterpillars feed and rest side by side along the midrib.

The sexes share the same pattern, and females tend to be slightly larger. Males carry patches of scent scales on the hindwings, used in courtship.

Rarity: Relatively common · 46/100. Owl Butterfly remains fairly widespread where rainforest edge, orchard, and humid woodland is still available.

• Keep distance and let the animal choose the space.
• Avoid blocking movement routes, nesting areas, or feeding behavior.
• Use optics, patience, and quiet observation instead of crowding for a closer view.