The crane's standing posture
Cranes had a special standing posture, which was to stand on one leg. One foot was retracted into the feather, and the other foot was used to support the body. There were many reasons for this posture: - ** Keeping warm **: Cranes live in cold areas such as Northeast China and Siberia. Their feet have no feathers and are bare skin. If both legs touch the ground, a lot of heat will be lost. When standing on one leg, the foot that was retracted into the feather could use the heat insulation effect of the feather to maintain the temperature. It could also reduce the area of contact with the air and reduce the heat carried away by the airflow, thus saving energy to maintain the body's temperature. - ** Body Balance **: When standing on one leg, the crane's center of gravity is at the center of the body, forming a vertical line directly above the support point. It is more stable than standing on two legs, and can avoid the body from swaying left and right to cause imbalance. - ** Other benefits **: Standing on one leg to rest can save energy better than standing on two legs. For birds that are easily threatened by enemies like red-crowned cranes, standing on one leg to rest can open their vision and make it easy for them to find enemies. Once enemies attack, they can fly high and escape quickly by flapping their wings. In addition, this posture was not unique to cranes. Many other birds, such as flamingos, egrets, cormorants, gulls, ducks, etc., also used a one-legged standing posture to keep warm or rest. Some non-bird animals, such as seals, walruses, sea lions, etc., also hid one hind leg in the body to reduce heat loss. " Fairy Dream of Tang Shi: Fate of Peony " is equally wonderful. Everyone is welcome to click and read it!
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