Presents a children's book for early readers that introduces vocabulary words through a story about Ms. Frizzle's class field trip where their bus turns into a bear.
Focuses on the activities of various kinds of birds which remain in the northern areas during the winter including their search for food and use of feathers for warmth.
Explains how some insects fly south for the winter and others spend the cold months under ground, under water, in unused buildings, or as eggs or pupae.
Biologist and science writer Bernd Heinrich investigates his local woods to study the ways a variety of animals adapt their physiology and behavior to the demands of winter.