The present season I met with a pair of them near Washington, as mentioned above. In size this bird approaches the wood-thrush, being larger than either the hermit or the veery; unlike all other species, no part of its plumage has a tawny or yellowish tinge. The other specimen was the Northern or small water-thrush, cousin-german to the oven-bird and half-brother to the Louisiana water-thrush or wagtail. I found it at the head of a remote mountain lake among the sources of the Delaware, where it evidently had a nest. It usually breeds much farther North. It has a strong, clear warble, which at once suggests the song of its congener. I have not been able to find any account of this particular species in the books, though it seems to be well known. More recent writers and explorers have added to Audubon's list over three hundred new species, the greater number of which belong to the Northern and Western parts of the Continent. Audubon's observations were confined mainly to the Atlantic and Gulf States and the adjacent islands; hence the Western or Pacific birds were but little known to him, and are only briefly mentioned in his works. It is, by the way, a little remarkable how many of the Western birds seem merely duplicates of the Eastern. Thus, the varied-thrush of the West is our robin, a little differently marked; and the red-shafted woodpecker is our golden-wing, or high-hole, colored red instead of yellow. There is also a Western chickadee, a Western chewink, a Western blue jay, a Western meadow-lark, a Western snow-bird, a Western bluebird, a Western song-sparrow, Western grouse, quail, hen-hawk, etc., etc. One of the most remarkable birds of the West seems to be a species of skylark, met with on the plains of Dakota, which mounts to the height of three or four hundred feet, and showers down its ecstatic notes. It is evidently akin to several of our Eastern species.