The Identity of this Lepidopteron
This looks like the Satyr Comma or Polygonia satyrus.

Characteristic of this species is a dark border near the tops of wings, fading near the bottom. They are common across the Western United States and Southern Canada.



For more information on this species, try this link and this link. 

To differentiate between moths and butterflies you can look at the anntenae. Butterflies often have a bulb at the end whereas moth antennae are feathery or saw-edged.