APPENDIX I 



ADDITIONS, SUBTRACTIONS, AND EMENDATIONS. 



Since the publication of the first edition of the 'Color Key' in 1903, the 

 American Ornithologists' Union has issued the Third Edition (1910) of its 

 'Check-List of North American Birds.' This includes all approved additions to 

 and changes in the preceding edition made since 1903 as well as rulings on a 

 number of cases which were in abeyance at the time the first edition of the 

 'Color Key' appeared. 



Mere changes in nomenclature not affecting the .status of a species are 

 given without comment in the preceding Systematic Table, which has been fully 

 revised and brought up to date. To ascertain the correct, current name of any 

 species or subspecies of North American bird the student, after determining 

 its identity in the 'Color Key,' has only to refer to its number in the Syste- 

 matic Table to learn whether any change has been made in nomenclature. In 

 addition to actual changes in nomenclature due to the detection of errors in 

 earlier names, it should be noted that a third name. or trinomial is now employed 

 for each race of a species, and also that an apostrophe is used in connection 

 with the names of birds named for individuals. Throughout the 'Color Key,' 

 therefore, alterations should be made when required by these two changes in 

 method. 



All other changes than these simple ones of names are included, with ex- 

 planations, in this appendix, and the student is urged to make manuscript 

 cross-references on the pages where such changes occur to avoid their being 

 overlooked. 



As far as possible the language of the original describer of the new sub- 

 species of birds is here quoted, while the Ranges are mainly from the A. O. U. 

 Check-List. 



References to original sources of publication are given only with cases in- 

 cluded in the first supplement to the Third Edition (1910) of the 'Check List.' 

 In all other instances reference to the original place of description etc., is con- 

 tained in the 'Check-List.' 



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