344 APPENDIX IV. 



1888. Fisher, A. K. Food of Hawks and Owls. United States 

 Department of Agriculture, Annual Report, 1887, pages 

 402-422. 



Statements of the stomach contents of more than one thou- 

 sand hawks and owls. The following species are mentioned: 

 Swallow-tailed kite, Mississippi kite, marsh-hawk, sharp- 

 shinned hawk, Cooper's hawk, goshawk, red-tailed hawk, red- 

 shouldered hawk, Swainson's hawk, broad-winged hawk, rough- 

 legged hawk, golden eagle, bald eagle; prairie falcon, duck 

 hawk, pigeon hawk, sparrow hawk, barn owl, long-eared owl, 

 short-eared owl, barred owl, Florida barred owl, sawwhet owl, 

 screech owl, great horned owl, snowy owl. hawk owl, and bur- 

 rowing owl. Only a few of these species were found to be 

 injurious. 



1888. Fisher, A. K. Experiments in Poisoning. United 

 States Department of Agriculture, Annual Report, 1887, 

 pages 423-426. 



Details of experiments with strychnine and arsenic in various 

 forms and corrosive sublimate, as poisons for birds. 



1888. Fisher, A. K. Xotes on the Depredations of Blackbirds 

 and Gophers in Xorthern Iowa and Southern Minnesota. 

 United States Department of Agriculture, Annual Report, 

 1887, pages 454-456. 

 Injuries in fall of 1887. 



1888. Warren, B. H. Report on the Birds of Pennsylvania, 

 with special reference to food habits. Harrisburg, 1888, 

 pages i.-xii.. 1-260. 



An elaborate report based on the examination of over three 

 thousand stomachs. Illustrated with fifty plates. A revised 

 and enlarged edition covering four hundred and fifty pages was 

 published in 1890. The notes on food materials are unusually 

 complete. 



1889. Baker, F. C. Notes on the Food of Birds. Proceedings 

 Academy of Natural Sciences of Philadelphia, pages 266- 

 270. 



Upwards of three hundred stomachs examined in Florida. 



