Almost all life on the surface of the earth derives its energy from the sun, either directly through photosynthesis or indirectly by consuming plants, making summer the time when nature is most active - feeding, fighting, mating, and nesting. From frogs, wasps, and caterpillars to hummingbirds and woodpeckers, Heinrich explores these animals' adaptations for surviving and procreating during the short window of summer, and he delights in the seemingly infinite feats of animal inventiveness he discovers there.