BIOL 1902 Lecture Notes - Lecture 7: Ruffed Grouse, Cryoprotectant, Ootheca
6 Feb 2019
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Document Summary
Subnivean layer is a layer underneath and is warm as the earth retains heat from the warm fall ground. This layer can be accessed only by small animals. Red squirrels go under the snow for this. Deer mice go under snow for this. There are dangers however, such as animals suffocating at the surface as well as predators watching and listening for animals borrowing to attack. Inside snow; certain animals go inside snow to survive the winter. Ruffed grouse snow bed; ruffed grouse dive into the snow to spend the night, they create a little snow cavern to keep them warm, called a snow bed. Basking in the sun is using the early morning sunlight to absorb solar energy for warmth. Early in the morning, birds will come out to absorb the solar energy and using the sun to warm themselves up.
