|Milbert's Tortoiseshell Butterfly (Aglais milberti)|
Location: Rocky Mountain National Park, Colorado
On an early Spring day, we walked the trail around the perimeter of Sprague Lake in Rocky Mountain National Park. At a point where a boardwalk section of the trail crosses over a marshy area, we paused to take in the view. Fortunately I looked down just in time to see this pretty butterfly land on some vegetation just below the boardwalk. It is a Milbert's Tortoiseshell (Aglais milberti), a member of the Nymphalidae family.