Natural History

Weidemeyer's Admiral Butterfly has a black upper surface with a wide white band across the wing. They usually (but not always) have a faint orange band below the white one, then a very thin white band along the rear margin of the wing. The butterfly ranges throughout the western US from Mexico to Canada and prefers moist mountain forests and riparian areas. 
 

The butterflies drink nectar from the flowers of willows, aspens, chokecherries and others. They often fly very high above the ground, but will come down to perch on the ground or in the low branches of trees.