Brrr! Winter is cold! When winter comes, it gets very cold and snowy. Food is hard to find. What do animals do? Some animals, like the hummingbird, Canada goose, osprey, warbler, and monarch butterfly, fly far away to warm places. Some animals, like the deer, fox, squirrel, cardinal, and rabbit, stay here and play in the snow. Some animals, like the groundhog, chipmunk, bat, frog, and turtle, take a very long rest! Let's learn about what different animals do when winter comes. Can you help sort them?
When winter arrives, temperatures drop and food becomes scarce. Animals have developed three different strategies to survive the harsh winter months.
Migration: Some animals travel south to warmer areas where they can find food and comfortable weather. The Canada goose, warbler, hummingbird, osprey, and monarch butterfly all migrate. Birds like geese fly hundreds or thousands of miles in flocks, while monarch butterflies make an amazing journey all the way to Mexico!
Stay Active: Some animals adapt to the cold by growing thicker fur and changing what they eat. White-tailed deer, red foxes, gray squirrels, northern cardinals, and cottontail rabbits stay awake and active all winter long. They find food like bark, nuts, seeds, and twigs to survive.
Hibernation: Some animals go into a special deep rest called hibernation. Groundhogs, chipmunks, bats, wood frogs, and turtles hibernate. Their bodies slow way down, their breathing slows, their hearts beat very slowly, and they don't need to eat for months! This is very different from regular sleep.
Let's discover which animals use each survival strategy!
As winter approaches, North American animals face significant challenges: freezing temperatures, reduced daylight, and limited food resources. Animals have evolved three distinct survival strategies to overcome these environmental pressures.
Migration: Many species undertake long distance journeys to regions with more favorable conditions. The Canada goose, warbler, ruby-throated hummingbird, osprey, and monarch butterfly are all migratory species. These animals may travel thousands of miles to Central and South America, using environmental cues like day length and temperature to time their departure. The monarch butterfly's multi-generational migration to specific forests in central Mexico is one of nature's most remarkable phenomena.
Winter Activity: Cold adapted species like the white-tailed deer, red fox, gray squirrel, northern cardinal, and cottontail rabbit remain active throughout winter by developing physiological and behavioral adaptations. These include growing insulating fur, lowering metabolic rates to conserve energy, and adjusting their diet to available food sources like bark, twigs, cached nuts, and seeds. Cardinals, with their bright red plumage, are especially visible against winter snow at bird feeders.
Hibernation vs. Torpor: True hibernation is not sleep, it's a dramatic metabolic shutdown. Hibernators like groundhogs, bats, wood frogs, and turtles experience body temperatures that drop near freezing, heart rates that slow to just a few beats per minute, and breathing that nearly stops. They survive months without food or water by relying entirely on stored fat. Chipmunks, however, enter torpor, which is a lighter state where they wake periodically to eat from stored food supplies. Bears (not included in our sorting game) also use torpor rather than true hibernation and can respond to threats, while true hibernators are deeply unconscious and very difficult to wake.
Explore how these 15 different North American species have adapted to survive winter's challenges!
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