These birds may be seen prowling through all parts of the woods at this season, watching for an opportunity to steal their egg into some nest. One day while sitting on a log I saw one moving by short flights through the trees and gradually nearing the ground. Its movements were hurried and stealthy. About fifty yards from me it disappeared behind some low brush and had evidently alighted upon the ground. After waiting a few moments I cautiously walked in the direction. When about half-way I accidentally made a slight noise, when the bird flew up, and seeing me hurried off out of the woods. Arrived at the place, I found a simple nest of dry grass and leaves partially concealed under a prostrate branch. I took it to be the nest of a sparrow. There were three eggs in the nest and one lying about a foot below it as if it had been rolled out, as of course it had. It suggested the thought that perhaps when the cow-bird finds the full complement of eggs in a nest, it throws out one and deposits its own instead. I re-visited the nest a few days afterward and found an egg again cast out, but none had been put in its place. The nest had been abandoned by its owner and the eggs were stale. In all cases where I have found this egg, I have observed both male and female of the cow-bird lingering near, the former uttering his peculiar liquid, glassy note from the tops of the trees. In July the young, which have been reared in the same neighborhood, and which are now of a dull fawn color, begin to collect in small flocks, which grow to be quite large in autumn. The speckled Canada is a very superior warbler, having a lively, animated strain, reminding you of certain parts of the canary's though quite broken and incomplete; the bird, the while hopping amid the branches with increased liveliness, and indulging in fine sibilant chirps, too happy to keep silent. His manners are quite marked. He has a habit of courtesying when he discovers you, which is very pretty. In form he is an elegant bird, somewhat slender, his back of a bluish lead-color becoming nearly black on his crown; the under part of his body, from his throat down, is of a light, delicate yellow, with a belt of black dots across his breast. He has a fine eye, surrounded by a light-yellow ring.