Canada Geese sleeping on the snow - They tuck their beaks under their wings and rest their heads on their backs. Their eyelids are white, so if you look at a resting goose and his/her eyes are white then they are sleeping. They usually sleep on water for protection, so no land-based predator can get at them. But keep in mind that even with flocks that are resting or sleeping there are always a few that are still awake, protecting the family. (by DGAnder on deviantART)
