What makes a lark appear happy?

Larks are known for their beautiful singing, which is often associated with happiness and joy. Their songs are typically cheerful and uplifting, and they often sing while flying high in the sky. This behavior is thought to be a way for larks to express their joy and contentment with life. Additionally, larks are known to be very social animals, and they often engage in playful behavior, such as chasing each other and playing in the air. This playful nature is also thought to contribute to their appearance of happiness.