ACKNOWLEDGEMENTS. 



During the past nine years the Cooper Ornithological Club, through the activ- 

 ity of its members, has greatly extended our knowledge of the local distribution 

 of bird-life in California. It is to the accurate records of these observers, as much 

 as to all previous field work combined, that we owe the mass of data now avail- 

 able. It is the author's wish that the present brief resume may serve as a recog- 

 nition of this initial period of activity, and set it off from one of much greater 

 accomplishment sure to follow, for our field is far from exhausted. 



In the compilation of this Check-Iyist which is the result of two years' work 

 on the part of the author, he has sought information from every possible source. 

 Aside from published writings, he has not hesitated to seek for information direct- 

 ly from many persons. Invariably he has received cordial assistance wherever 

 solicited. 



I have in particular to acknowledge valuable help from Robert Ridgway of 

 the National Museum in comparing specimens and looking up records. I am also 

 indebted to Charles H. Gilbert of Stanford University for critical advice on points 

 of nomenclature; to William R. Dudley and Walter K. Fisher of Stanford Univer- 

 sity for information in regard to the extent of Life Zones and Faunal Areas, and to 

 the latter also for looking up literature and comparing specimens in Washington; 

 to Leverett M. Loomis for the privilege of examining specimens and books in his 

 charge at the California Academy of Sciences; and to F. S. Daggett, C. Barlow, 

 J. Mailliard, W. O. Kmerson, E. Heller, M. P. Anderson and other Cooper Club 

 members for specimens and help in many ways whenever asked. 



JOSEPH GRINNEIvIy. 



Stanford University^ California, 



April 25, igo2. 



