In the poem 'Whispers of the Night' the author describes the moonlit forest as follows:

"The ancient trees stood tall, their branches stretching toward the sky, as if longing for the stars. The night air was alive with the laughter of crickets, and the wind danced playfully through the leaves, whispering secrets known only to the shadows."

What literary device is predominantly used in this passage when the author says 'the wind danced playfully through the leaves'? Consider how the language attributes human characteristics to non-human elements in nature.