The strength of eagles is not in flapping their wings but in soaring. When a storm is approaching an eagle will fly to a high spot and wait for the winds to come. When the storm hits, it locks its wings in a fixed position and sets them so that the wind will pick it up and lift it above the storm.

https://www.mesabitribune.com/community_voice/church_news/on-eagle-s-wings/article_df4d9ce2-100a-11ec-924a-a752ba855b48.html