The poem "Night is Done" reflects a transition from night to day, symbolized by the departure of the moon and stars. It conveys a sense of peace as the dawn brings rosy light, urging the creatures of the night, like owls, to rest safely. The imagery of folding wings and resting gizzards illustrates the comfort of returning home to their tree, embracing the safety and tranquility that morning brings.

Moreover, the mention of "Glaux," a term associated with the dusk and nighttime, suggests an inevitable return of night after the day. The poem captures the cyclical nature of life and the balance between night and day. The owls' freedom and their connection to their home create a sense of belonging, reinforcing that despite the daylight, they are always aware that night will come again.