NOTE TO SECOND EDITION 
Since the publication of this book the Nomenclature Committee 
of the American Ornithologists' Union has made a number of rulings 
in regard to western birds, recognizing some of the new subspecies, 
rejecting others, and raising some subgenera to the rank of genera. 
A list of these alterations will be found in the Appendix, pp. 486- 
488. The revision of the Horned Larks ( Otocoris) has been incorpo¬ 
rated in the book itself, as the genus was in a state of great confu¬ 
sion. So far as discovered, the errors and omissions of the first 
edition of the book have been corrected. 
F. M. B. 
August, 1903. 
In the Third Edition of the book all additional errors discovered 
have been corrected, many of the photographs of bird-skins have 
been replaced with drawings by Mr. Kako Morita, and Astragalinus 
has been revised in the text to accord with the rulings of the Amer¬ 
ican Ornithologists’ Union. 
June , 1908. 
F. M. B. 
