Thoreau writes in his journal:
The hillside at Clintonia Swamp is in some parts quite shingled with the rattlesnake-plantain (Goodyera pubescens) leaves overlapping one another. The flower is now apparently in its prime. As I stand there, I hear a peculiar sound which I mistake for a woodpecker’s tapping, but I soon sec a cuckoo hopping near suspiciously or inquisitively, at length within twelve feet, from once to time uttering a, hard, dry note . . .