Since the onset of winter radically affects the state of one of the most important components of all living things - water, equally strong changes in the physiology and behavior of animals must occur in response to environmental changes. Some creatures survive by producing special substances, while others remain in constant motion to maintain body temperature. Having avoided the threat of freezing to death, animals must still have time to find food during times of shortage or store it in advance during the period of summer abundance. The famous American naturalist Bernd Heinrich describes the strategies used by weasels, flying squirrels, squirrels, wrens, turtles, aquatic rodents, frogs, insects, hamsters, bats, butterflies, bears, bees and many other representatives of the animal kingdom to survive in harsh conditions. winter conditions. Beautifully illustrated with drawings by the author and filled with his inexhaustible love for nature, this book covers the behavior of animals and plants during the coldest time of the year. The publishing layout is saved in PDF A4 format.