Birt KEY 
NORTH AMERICAN BIRDS 
CONTAINING A CONCISE ACCOUNT OF EVERY SPECIES OF 
LEVYING ANT FOSSA BIRD 
AT PRESENT KNOWN FROM THE CONTINENT NORTH OF THE MEXICAN 
AND UNITED STATES BOUNDARY. 
ILLUSTRATED BY 6 STEEL PLATES, AND UPWARDS OF 250 WOODCUTS. 
BY 
ELLIOTT COUES, 
ASSISTANT SURGEON UNITED STATES ARMY. 
SALEM: AGENCY. 
NEW Y ND MEAD 
BOSTON: ES AND LAURIAT. 
Oot 1872. ° 
