VIII BULLETIN 19 6, UNITED STATES NATIONAL MUSEUM 



Egg measurements were furnished especially for this volume by 

 Dean Amadon (for the American Museum of Natural History), 

 James Bond, John R. Cruttenden, Charles E. Doe, Wilson C. Hanna, 

 Wm. George F. Harris (for the Museum of Comparative Zoology), 

 Ed N. Harrison, A. D. Henderson, Turner E. McMullen, Dr. Robert 

 T. Orr (for the California Academy of Sciences), Lawrence Stevens, 

 George H. Stuart, 3d, and Margaret W. Wythe (for the Museum of 

 Vertebrate Zoology). The greater part of the measurements were 

 taken from the register sheets of the United States National Museum 

 by Wm. George F. Harris, who also relieved the author of a vast 

 amount of detail work by collecting and figuring hundreds of egg 

 measurements and by collecting, sorting, and arranging several thou- 

 sand nesting records to make up the "egg dates" paragraphs. 



Through the courtesy of the Fish and Wildlife Service, Miss May T. 

 Cooke has compiled the distribution and migration paragraphs. The 

 author claims no credit and assumes no responsibility for these data, 

 which are taken from the great mass of records on file in Washington. 



The manuscript for this bulletin was completed in 1943. Contribu- 

 tions received since then will be acknowledged later. Only informa- 

 tion of great importance could be added. The reader is reminded 

 again that this is a cooperative work; if he fails to find in these volumes 

 anything that he knows about the birds, he can blame himself for not 

 having sent the information to — 



The Author. 



