Creative nonfiction picture book explains evolution and natural selection. A newly-emerged peppered moth blends in with other speckled-winged moths on lichen-covered branches, but over time the moths with black wings increase as trees are blackened by soot from man-made machines.

"In this reimagined version of The Twelve Days of Christmas, winter wildlife is observed as the snow comes. What animals do you think you might see? Do you think bears will be included? Why or why not? The only way to find out is to read or sing along as animals watch their world get blanketed by gentle layers of snow"--