viii PREFACE 



his sincere thanks. The columns of " Bird-Lore " 

 have furnished much valuable material, other mag- 

 azines and bird-books have been consulted, and 

 through personal correspondence much of value 

 has been acquired. From these same sources have 

 been secured many of the illustrations, credit for 

 which is given in connection with each photo- 

 graph. A list of those to whose contributions in 

 any of these ways the author has had access, is 

 printed in an appendix. 



The author takes special pleasure in acknow- 

 ledging his indebtedness to Mr. Edward Howe 

 Forbush, whose wide experience renders his vari- 

 ous publications most helpful, and who has read 

 the entire manuscript, offering many valuable 

 suggestions. 



Special thanks, also, are due Edward Uehling 

 for many valuable suggestions and results which 

 his ingenuity and persistence have made possible. 



A brief summary has been given of some very 

 interesting experiments carried on in Germany 

 by Baron von Berlepsch, whose work has been 

 described by Martin Hiesemann in a book entitled 

 "How to Attract and Protect Wild Birds," 

 which has now appeared in an English transla- 

 tion. 



For illustrations used in this book thanks are 

 due to Messrs. Ernest Harold Baynes, J. S. 



