Winter Survival Strategies
Do you have a go-to winter survival strategy?
Animals in Glacier typically have three: dormancy, migration, and adaptation. These essentially mean: sleep through it, migrate away from it, and deal with it.
Dormancy involves the slowing of bodily functions to conserve energy, and it has different forms and lengths. Torpor is a short period of reduced activity, while hibernation is longer-term and involves reduced metabolism, slower heart rate, and lowered body temperature. In Glacier, marmots and ground squirrels are a couple of animals that hibernate.
Dormancy pro: Professional-grade snuggling.
Dormancy con: Extreme hanger upon waking up.
Seasonal migration usually entails long-distance moves from one location to another to find better food resources and more comfortable habitat. It can also mean moving from higher to lower altitudes for the same reasons. Some of the animals that do that in Glacier include mule deer, Clark’s nutcrackers, and elk.
Migration pro: Food you don’t have to dig out of the snow.
Migration con: A really, really long flight with a lot of layovers.
Adaptation to winter includes physical and behavioral traits that animals have developed to survive harsh winter conditions. Ptarmigans and snowshoe hares in Glacier have feathers and fur that turn white in the winter for better camouflage against the snow. Pikas stay active all winter long in their rocky dens, thanks to vegetation they stockpiled over the summer. Mountain goats grow heavier coats and will move to sunnier, south-facing slopes.
Adaptation pro: Bragging rights.
Adaptation con: Constantly chapped lips (do ptarmigans have lips?), becoming a walking icicle.
If you were an animal in Glacier, which winter survival strategy would you pick?
[Image descriptions: Image 1: A deer stands on a snow-covered road surrounded by snowy trees. Image 2: A group of female elk with eyes mostly closed stand in deep snow. Image 3: A fluffy white bird sits half-buried in snow. Image 4: A squirrel pokes its head out of a burrow in a lawn]












