Why is ti difficult for the wandering albatross to take off?

Wandering albatrosses are quite heavy, and have to do a warm-up before lifting themselves up into the air-just like an aircraft that increases its speed on the runway. They often have difficulty if the wind speed is below 12 km/h. They usually glide when they are in the air because a lot of energy is consumed in flapping their wings. Albatrosses, which have the largest wingspan of 3.5 m in the animal kingdom, cover thousands of kilometres in the air and are capable of remaining in the air without flapping their wings for several hours. They mate for life and return to the small islands to the north of Antarctic for breeding.