When you buy through links on our articles, Future and its syndication partners may earn a commission. Giant owl butterflies (Caligo idomeneus) have eye spots on their wings that look like the eyes of ...

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 ...

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 ...