classic waka stream

though autumn night dew
rests there as but dew alone—
could it instead be
the tears of passing wild geese
that stain the fields with their hue?

Meaning
Though the dew of the autumn night lies there as mere dew, could it be that the tears of the geese dye the fields?
Commentary
Book Five Autumn Poems (Part Two)

Composed at a poetry contest at the residence of Prince Koretada.

According to a conventional idea, dew was thought to color the leaves of plants. Yet dew, being but a tiny amount, could not truly dye them. Thus, the poet imagines instead that the sorrowful tears of geese flying overhead fall and color the fields.
Author
Mibu no Tadamine
Source
Kokin Wakashu
Other