Just opened randomly her book "Devotions". Look what I found on page 93.
The Other Kingdoms
by Mary Oliver
Consider the other kingdoms. The
trees, for example, with their mellow-sounding
titles: oak, aspen, willow.
Or the snow, for which the peoples of the north
have dozens of words to describe its
different arrivals. Or the creatures, with their
thick fur, their shy and wordless gaze. Their
infallible sense of what their lives
are meant to be. Thus the world
grows rich, grows wild, and you too,
grow rich, grow sweetly wild, as you too
were born to be.
From "Devotions, The Selected Poems Of Mary Oliver", Penguin Press, 2017