Range. - United States, east of the Rockies, breeding from the Gulf to the Middle and Central States; casually north to Massachusetts and Minnesota.

These graceful birds are bluish gray above with a black forehead and central tail feathers, and white underparts. They are common in wooded districts in the south, where they saddle their beautiful nests upon horizontal branches or in crotches usually at quite an elevation from the ground; they resemble large Ruby-throated Hummers' nests but the walls are much higher and thicker; they are made of plant fibres and down, lined with cottony substances and hair, and covered on the outside with lichens to match the limb upon which it is placed. Their eggs are bluish white, specked with reddish chestnut. Size .58 x .45. Data. - Chattanooga, Tenn., April 30, 1900. Nest of moss, covered with lichens and lined with hair and feathers; 20 feet from the ground in a small tree.

NEST AND EGGS OF BLUE GRAY GNATCATCHER

C. A. Smith NEST AND EGGS OF BLUE-GRAY GNATCATCHER.

Blue gray Gnatcatcher

Blue-gray Gnatcatcher.

751a. Western Gnatcatcher. Polioptila Caerulea Obscura

Range. - Western United States and Lower California.

The habits and eggs of this sub-species are the same as those of the eastern bird, and the nests do not differ except, perhaps, in less ornamentation of the exterior.