What is the summary of poem a whirl blast from behind hill?

The speaker begins by watching birds in flight, noting the way they drift and float effortlessly on the wind. They consider the beauty of migration, a time when birds travel from their wintering grounds to their breeding grounds. The speaker admires the birds' wings, which are "feathered shapes". They marvel at the way birds know where to go and how they navigate their journeys so precisely.

The speaker wonders what it would be like to fly alongside the birds, to feel the wind in their hair and to soar through the sky. They reflect on the feeling of freedom and independence that birds must experience, and wish that they could fly too.

The poem ends with the speaker expressing a sense of longing for the freedom and grace of birds. They watch the birds disappear into the distance, filled with a sense of wonder and admiration.