Introduction Facing Long Island Sound for practically all of its hundred miles of southern border, Connecticut shows a succession of low, rocky promontories and sandy beaches divided by shallow bays znd salt marshes. The Iatter stretch for varying distances northward, but soon give place to rather broad stream valleys, separated by gently rising hills. These hills, usually low and rounded at the coast, when not dikes or sheets of trap, as near New Haven, become rapidly more mountainous in the northwestern part of the state, culminating in Bear Mountain in the extreme corner, 2,354 feet in altitude and sixty miles from the Sound. The soil of these hills is usually poor and shallow, while that of many of the valleys is deep and rich, so that, while the Low- lands are weH cultivated and thickly settled, the uplands are generally left to brush land or forest From this configuntion it will be evident that most of the streams are short and flow in a south- erly direction. Three main river courses cross the state - the Thames on the east, which for its Iow,er quarter is practically an arm of the sea, and above that hardly more than a small stream the Connecticut, which passes through the center, in a broad and fertile valley in its upper course, and in a narrow valley h em4 in by highlands below Portland and the Housatonic in the western part, with a narrow and much more mountainous valley. Apparently the Connecticut and upper Housatonic valleys and the south- ern coast line are highways for the migration of our birds in spring, and the coast line certainly is in fall, but our information on this point is at present very incomplete. The woodland consists chiefly of deciduous trees, though hemlocks and cedars are common, and groves of white pine and spruce still exist in the northwestern portion. Shut off from the ocean by Long Island, strictly pelagic birds are seldom found in Connecticut, but for many other species it is particularly fitted as regards dirnate and topography. Bull, species nest more or less relarly within its borders, and it is probable there are few localities in our country where so many can be found within so circumscribed an area. Almost the entire state lies in the Alleghenian Zone, where such birds as the Ruffed Grouse, Red-shouldered Barvk, Kingbird, Least Flycatcher, Bobolink, Baltimore Oriole, Goldfinch, Towhee, Indigo Bunting, Scarlet Tanager, Red-eyed, and Warbling Vireos, Black and White, Yellow, and Chestnut-sided Warblers, Catbird, Brown Thrasher, Chickadee,Wood, and Wilsons Thrushes, nest abundantly...