Ans Here ‘he’ is the Grasshopper in the poem, ‘The Poetry of Earth’ written by John Keats. >> In absence of the song-birds, the Grasshopper fills up the void in Nature by his song. But whenever he feels tired, he takes rest beneath some pleasant weed only to resume his song with renewed energy > When all song-birds stop singing, the Grasshopper enlivens Nature by chirping merrily. He moves from hedge to hedge in the meadow singing the delightful song of summer luxury. Thus when the whole countryside seems to be tired and exhausted, the Grasshopper brings joy.