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. 



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