APPENDIX IV. ;](y,] 



1897. Owen, Danihl E. XoU\s oh m Caplivc llcniiil Tlirusli. 

 The Auk, vol. xiv., pages 1-8. 



Account of feeding habits of lierniit thrush ; method of de- 

 termining: rate of dicfestion. 



189T. Palmer, T. S. Extermination of Xoxions Animals by 

 Bounties. United States Department of Agriculture, 

 Yearbook, 1896, pages 55-()8. 



History of bounty system in the United States and other coun- 

 tries. Bounties on birds almost invariably pernicious. 



1897. Proctor, Thomas. Disgorgement among Song Birds. 

 The Auk, vol. xiv., page 412. 



\Yood thrushes and other true thrushes disgorge cherry pits; 

 disgorgement also noticed in red-eyed vireo, myrtle bird, and 

 European robin. 



1897. Reed, J. Harris. Xotes on the American Barn Owl in 

 Eastern Pennsylvania. The Auk, vol. xiv., pages 374- 

 383. 



Occurrence, nesting habits, feeding habits. 



1897. SiLLOWAY, P. M. Sketches of some Common Birds. Cin- 

 cinnati. The Editor Publishing Company. Pages 1-331. 



Many references to food habits. 



1897. Warren^ B. H. The Army- Worm. Peport Pennsylvania 

 State College, 189(), pages 164-220. 



Record of studies of food of many birds during an army-worm 

 outbreak, showing that nearly all fed freely on the pests. 



1898. Adams, Stephen J. Swallow Investigations. The Wil- 

 son Bulletin, vol. x., 0. S. Xo. 20, May 30. 1898, pages 

 42-43. 



They take enormous numbers of insects; nearly, if not quite, 

 all taken on the wing. Harn swallows take enormous numbers 

 of apple-maggot Hies. 



