362 APPENDIX IV. 



1897. BUTCHER, WILLIAM. Report of A. 0. U. Committee on 

 Protection of North American Birds. The Auk, vol. xiv., 

 pages 21-32. 



Report of progress during the year. 



1897. GRINNELL, JOSEPH. Disgorgement among Song Birds. 

 The Auk, vol. xiv., page 318. 



Robins and cedar-birds disgorge seeds of pepper-tree. 



1897. JONES, LYNDS. The Oberlin Grackle Roost. The Wilson 

 Bulletin, vol. ix., 0. S. Bulletin No. 15, July 30, 1897, 

 pages 39-56. 



Habits during courtship and nesting; how the young are 

 taken to the roost; eat fruit, then ripening corn; time of 

 roosting; in the North the breeding season is beneficial to agri- 

 culture; the roosting season the reverse. 



1897. JUDD, SYLVESTER D. Methods in Economic Ornithology, 

 with Special Reference to the Catbird. American Natu- 

 ralist, vol. xxxi., pages 392-397. 



Proportions of foods ascertained by examination of stomach 

 contents ; preferences by field observations ; shy birds caged 

 and various foods offered. 



1897. KENYON, F. C. The English Sparrow not always a Nui- 

 sance. American Naturalist, vol. xxxi., page 73. 



Dr. Judd reports fondness for dandelion seeds; saw the spar- 

 row catch and devour a cicada. His ability to catch insects on 

 wing discussed. 



1897. KIRKLAND, A. H. The Sugar Maple Borer. Massachu- 

 setts Crop Report, June, 1897, page 32. 



Presumptive evidence that hairy woodpecker, downy wood- 

 pecker, and flicker feed on larvae of Plagionotus speciosus. 



1897. LUCAS, F. A. The Tongues of Birds. United States 

 National Museum, Report for 1895, pages 1001-1019. 



Discusses the relation of the tongue to the hyoid, and the 

 different forms of development of the two in the various groups 

 of birds. 



