Another Mystery of the San Juan

All of the aspens and willows that were greening up last week have been leafing-out valley floor and along the mountain slopes this weather week. Tiny yellow-eyed, grass flowers, white-marsh marigolds and creeping barberry are blooming most beautifully. Springtime in the Rockies is also welcoming the return of many species of birds. Swallows swoop and dive. Last week’s blue grouse got...