A very young bird (4,332, Dane Co., Wis.) is dusky above, with feathers of the dorsal region broadly tipped with ochraceous, lesser and middle wing-coverts white tinged with fulvous, dusky below the surface, greater coverts very broadly tipped with fulvous-white; primary coverts narrowly tipped with the same. Whole lower parts unvariegated fulvous-white; head all round plain ochraceous, deepest above. HABITS. The Yellow-headed Blackbird is essentially a prairie bird, and is found in all favorable localities from Texas on the south to Illinois and Wisconsin, and thence to the Pacific. A single specimen is recorded as having been taken in Greenland. This was September 2, 1820, at Nenortalik. Recently the Smithsonian Museum has received a specimen from New Smyrna, in Florida. In October, 1869, a specimen of this bird was taken in Watertown, Mass., and Mr. Cassin mentions the capture of several near Philadelphia. These erratic appearances in places so remote from their centres of reproduction, and from their route in emigration, sufficiently attest the nomadic character of this species. They are found in abundance in all the grassy meadows or rushy marshes of Illinois and Wisconsin, where they breed in large communities. In swamps overgrown with tall rushes, and partially overflowed, they construct their nests just above the water, and build them around the stems of these water-plants, where they are thickest, in such a manner that it is difficult to discover them, except by diligent search, aided by familiarity with their habits. In Texas Mr. Dresser met with a few in the fall, and again in April he found the prairies covered with these birds. For about a week vast flocks remained about the town, after which they suddenly disappeared, and no more were seen. In California, Dr. Cooper states that they winter in large numbers in the middle districts, some wandering to the Colorado Valley and to San Diego. They nest around Santa Barbara, and thence northward, and are very abundant about Klamath Lake. They associate with the other Blackbirds, but always keep in separate companies. They are very gregarious, even in summer. Dr. Cooper states that the only song the male attempts consists of a few hoarse, chuckling notes and comical squeakings, uttered as if it was a great effort to make any sound at all. Dr. Coues speaks of it as less numerous in Arizona than at most other localities where found at all. He speaks of it as a summer resident, but in this I think he may have been mistaken. In Western Iowa Mr. Allen saw a few, during the first week in July, about the grassy ponds near Boonesboro’. He was told that they breed in great numbers, north and east of that section, in the meadows of the Skunk River country. He also reports them as breeding in large numbers in the Calumet marshes of Northern Illinois.