O16 KEY TO THE BIRDS OF EASTERN NORTH AMERICA, 
Upper plumage, ashy gray; basal portion of primaries, white, forming a 
white wing patch; underparts, ashy white, without streaks. 
Mocking=bird. 
Mimus polyglottos. 
See No. 533. 
Entire upper plumage, rufous brown; 
underparts, buffy white, streaked with 
dark brown; wing coverts, tipped with 
white: tail, more than four inches 
long. 
Brown Thrush. 
Brown Thrasher. 
IHarporhynchus rufous. 
See No. 535. 
Brown Thrush. 
FAMILY CERTHIIDAE. 
Creepers. 
Bill, slender and decurved; tail feathers, stiff and pointed; nostrils, 
exposed ; tarsus, scutellate; first primary, very short. But one species 
occurs in Eastern North America —a small bird; wing, less than three 
inches; length, less than six inches. 
Tail feathers, stiff and pointed ; bill, curved; upper parts, streaked: under- 
parts, white; rump, dull rufous brown, Brown Creeper. 
Certhia Jamiliaris americana. 
See No. 546. 
