156 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
Group 2. Wing, from 5.50 to 7.50 inches long. 
Section 1. Primaries, dark slaty brown or blackish. 
Upper parts, grayish olive; crown, tinged with slate color; sides of neck, with 
purplish metallie reflections: a bluish black spot on lower edge of ear coverts ; 
wing coverts, not broadly tipped with white; tail, pointed; middle tail 
feathers, much longer than outer feathers. 
Mourning Dove. 
Zenaidura macroura. 
See No. 252. 
Wing coverts, broadly tipped with white; crown, and back of the neck, drab 
color; tail, square not pointed; outer feathers, but slightly shorter than mid- 
dle ones; terminal fourth of tail feathers, ashy, or ash gray. 
White-winged Dove. 
Melopelia leucoptera. 
See No. 254. 
