In the forests of Mexico resides the giant owl butterfly (Caligo eurilochus) that flaps its papery 7-inch (18 centimeters) wings at dusk when predator birds are absent. At the base of each wing is a ...

This giant is conspicuous due to the yellow and black spots in the middle of its brown ... Luke Brown, one of the expert's behind the Museum's Sensational Butterflies exhibition, said: 'The owl ...