Why do butterflies sit on the ground most of the time in the tundra?

In the tundra, butterflies sit on the ground most of their time due to the extremely windy weather. They simply simply cannot fly – the wind will simply carry them away or even break their wings. Due to the strong wind, the flowers sway and the pollen from the flowers flies to the ground. This is very convenient for the butterfly – it just eats pollen from the ground. If the wind is strong enough to prevent the butterfly from flying normally, but weak enough to sweep the pollen from the flower to the ground, the butterfly, with its wings compressed, climbs the flower along the trunk of its own accord.