Walden is melting apace. There is a canal two rods wide along the northerly and westerly sides, and wider still at the east end. A great field of ice has cracked off from the main body. I hear a song sparrow singing from the bushes on the shore⁠— olit , olit , olit ⁠— chip , chip , chip , che char ⁠— che wiss , wiss , wiss