The owl butterfly may be beautiful, but looks can be deceptive: in reality the species is something of a hooligan. The juice guzzler loves nothing more than a day feeding on fermented fruit and ...

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Some species have developed large eyespots on their wings, tricking predators into thinking they have come face to face with a much larger creature. The owl butterfly is one example of this. Its ...

National Geographic stories take you on a journey that's always enlightening, often surprising and unfailingly fascinating. This month–the lost women of the Viking Age.

The butterfly's primary host plant is the endangered dwarf plantain, but larvae also may live on purple owl's clover or exerted Indian paintbrush. Primary Bay checkerspot habitat is native grassland ...