FOREWORD 



The Author desires to thank the members of the 

 U. S. Biological Survey, who have assisted him 

 with counsel, personal material and have read the 

 manuscript of the book, especially Mr. E. W. Nel- 

 son, Chief of the Survey. Appreciative thanks 

 are also tendered to Mr. Ernest Harold Baynes, 

 one of the leaders in the Bird Sanctuary move- 

 ment, and to Mr. Gilbert Pearson, secretary of the 

 National Association of Audubon Societies. 

 Obligation is expressed to Mr. Frank M. Chapman 

 for material used from the "Handbook of Birds of 

 Eastern North America," and to the Lippincott 

 Co., the Macmillan Co., and Doubleday, Page & 

 Co. for the use of copyrighted illustrations. Ap- 

 preciation of courtesy furthermore is expressed to 

 the American Museum of Natural History, for 

 the use of pictures of museum exhibits and other 

 photographs of bird life made by the members of 

 its scientific staff. 



