In Bodaisatta Shishobo, Dogen Zenji wrote:

To leave flowers to the wind, to leave birds to the seasons are the activity of dana (giving).

Shinshu’s Commentary:

A endless meadow of flowers, and flocks of birds overhead, how we long for nature. Yet, when it is inconvenient or gets in the way we easily forget our bodhisattva vow to benefit all beings, not just human beings. An ant walked across my bathroom floor this morning and this weekend they found the sugar. I left the ant alone who walked across what must have been a vast terrain of tiles and put the sugar in the refrigerator.