ACKNOWLEDGMENTS 



IN the preparation of this book the author has 

 had much assistance some direct from friends, 

 some through the medium of books, pamphlets, 

 and reports. To everyone who has given him 

 any help, direct or indirect, he acknowledges his 

 indebtedness and proffers his thanks, and to 

 none more gratefully than to those scientific 

 men in Washington and elsewhere, upon whose 

 patient, accurate, but often unappreciated work, 

 some of the strongest pleas for bird conservation 

 are based. 



By far the most important assistance which 

 the writer received, was that given by his friend, 

 Frederic H. Kennard, of Boston, landscape archi- 

 tect and ornithologist, whose peculiar combina- 

 tion of knowledge enabled him to contribute the 

 sub-chapter on the trees, shrubs, and creepers 

 which are attractive to birds (and in many cases 

 to man, as well), quite the most unique and in 

 many respects the most valuable part of the 



whole book. 



310 



