classic waka stream

White clouds drift on—
with beating wings they cross and fly,
the passing wild geese;
even their number is seen
in the moon of an autumn night.

Meaning
On an autumn night, the moon shines so brightly that even the number of wild geese flying with beating wings across the white clouds can be clearly seen.
Commentary
Book Four Autumn Poems (Part One)

The poem depicts the scene of a bright autumn night under the moon.

In some versions, the phrase appears as “even their shadows can be seen,” which would emphasize the brightness of the moon even more, suggesting that the shadows of flying geese fall upon the ground—an exaggerated image.
The reading “even their number can be seen,” however, presents the beauty of the scene in a more simple and direct way.
Author
Unknown Poet
Source
Kokin Wakashu
Other