“I leant upon a coppice gate When Frost was spectre-gray, And Winter's dregs made desolate The weakening eye of day.”
The opening converts a winter landscape into an image of exhaustion and ending, establishing the bleak scene against which the later thrush song becomes striking.
Source note: “The Darkling Thrush,” collected in Poems of the Past and the Present (1901), Project Gutenberg #3168. The poem first appeared at the turn of the century; this collection uses the represented collection as source identity.