Where the hermit-thrush sings
Eliot's choice to mention the Thrush instantly stood out to me because the Hummingbird, which is the other bird he mentioned, has held significant meaning throughout The Waste Land. Similar to the Hummingbird which represents Philomela's lost but prophetic voice, the Thrush is introduced in Chapman's handbook as "This Thrush comes to us in the spring, when the woods are still bare, and lingers in the autumn until they are again leafless." This directly mimics how Eliot has discussed rebirth and spring's involvement with the cycle of death. The Thrush's voice is described as "not remarkable for variety or volume, but in purity and sweetness of tone and exquisite modulation they are unequaled." This description of pureness makes it so the Thrush has a prophetic voice, nothing material, just pure. Especially as Eliot uses "Drip drop drip drop drop drop drop." The "Drip" refers to the Water that has been sought after throughout this segment of the poem, and the purity and saving quality of the bird's song. The thrush's song being described as "While traveling, the Hermit Thrush is not in full voice, and he who would know its song must follow it to the mossy forests, which are its summer home" connects to the journey in the poem. The travelers must follow something deeper to find real renewal, just like you have to follow the thrush to its true home to hear its full song. In Keats's Thrush poem, the Thrush's voice is again described as warm and naturally freeing from knowledge. "O thou, whose only book has been the light / Of supreme darkness which thou feddest on / Night after night when Phoebus was away" describes someone who has learned from darkness itself. The thrush says "O fret not after knowledge. I have none, / And yet my song comes native with the warmth." This natural wisdom without overthinking is what the wasteland needs. The thrush offers instinctive hope, not thought out hope. It just sings, and in singing, it brings the sound of water, the promise of renewal, without needing to understand or explain it.