Bird Song in Snowfall -- Rocky Mountain National Park, Colorado, U.S.A. by Gavia immer published on 2021-12-28T22:51:02Z Listen to calls and songs of birds during a late spring snowstorm on May 16, 2021. East Troublesome Fire Burn Site 1. West side of Rocky Mountain National Park. Recordings were collected for research purposes with written permission and permits from the park. Genre Nature