Butterflies of the Northern Colorado Front Range

Photographs, Species Accounts, Checklists and Sighting Reports

An interactive guide to the butterflies of the Northern Colorado Front Range, defined to include the following counties: Boulder, Broomfield, Clear Creek, Gilpin, Jefferson, Larimer, and Park (MAP), with sighting information collected by butterfly watchers across the area.

This website is intended to be an evolving resource and guide that provides an up-to-date, accessible reference to the butterflies of the Northern Colorado Front Range (MAP), with photographs and information on sighting dates and locations collected and contributed by butterfly watchers across the Front Range region.

We hope you will join us in searching for, photographing and submitting your butterfly finds and photos. If you have sighting information and/or photos to contribute, please complete the Submit A Sighting form or contact the webmasters. We ask that all of the butterflies documented on this website will have been observed and photographed in the prescribed Front Range area.