Colorado’s winter birds are ‘extraordinary survivors’ that grow ‘snowshoes,’ build snow caves and stash thousands of seeds

Colorado’s winter birds are ‘extraordinary survivors’ that grow ‘snowshoes,’ build snow caves and stash thousands of seeds

Winters in the Colorado Rocky Mountains can be long and formidable. Before the snow flies, thousands of birds migrate each fall to escape the cold.  Mary Harris, the chair of the Roaring Fork Audubon, said that migrating birds are “astounding in their own right” as they can travel hundreds of miles — often guided by the stars — to warmer climates as far away as South America. Yet, despite abundant snow, blizzards and chilled temperatures, there …