At first, a flutter at the edge of my vision made me think that an autumn leaf had somehow managed to fall half a mile to the middle of the lake. A closer look revealed the dark purple wings of a mourning cloak butterfly. In late September? 

Weeks later, a flutter at the edge of my vision caught my attention just in time to watch an autumn leaf come to rest on the ground. Small quaking aspen leaves carpeted the trail in a mosaic of yellow and green. They were evidence of yet another way that a Lepidopteran (butterflies and moths) survives the winter.

Colorful leaves and colorful wings flutter on fall breezes, all getting ready for winter.