anterican j^atwe >erie0 



Group I. Natural History 



BIRDS OF THE WORLD 



A POPULAR ACCOUNT 



BY 



FRANK H. KNOWLTON, PH.D. 



United States National Museum 



Member of the American Ornithologists' Union, Washington Academy of Sciences 

 Biological Society of Washington, Etc. 



WITH A CHAPTER ON THE ANATOMY OF BIRDS 



BY 



FREDERIC A. LUCAS 



Curator-in-Chief, Brooklyn Institute of Arts and Sciences 

 THE WHOLE EDITED BY 



ROBERT RIDGWAY 



Curator of Birds, United States National Museum 

 WITH 1 6 COLORED PLATES AND 236 ILLUSTRATIONS 



NEW YORK 



HENRY HOLT AND COMPANY 



1909 



