FAMILY TURDIDZ. — THRUSHES AND BLUE-—BIRDS. 321 
FAMILY TURDIDA. 
Thrushes and Blue=birds. 
First primary, very short; tarsus, booted (no scales showing, except 
near the toes); bill, shorter than head. 
Group 1. Wing, from 3.25 to 4.75 inches long. 
Part 1. The following species have the underparts more or less streaked 
or spotted : 
Thrush. 
Back, rump, and upper tail coverts, olive, about the same color; eye ring, 
cheeks, and lores, pale buff; no white on wing coyerts. i 
Olive-backed Thrush. 
Turdus ustulatus swainsoit. 
See No. 564. 
