Owl Butterflies (Caligo memnon) are large, tropical butterflies found in secondary forests and rainforests from Mexico down to the Amazon in South America. Butterflies are typically diurnal (active in the daytime), but Owl Butterflies are crepuscular (most active at twilight), so during the day, you are most likely to see them resting. I observed this somewhat battered Owl Butterfly perched on a leaf on a dark, misty day in May in Alajuela, Costa Rica.
March 24th, 2012
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