170 BIBLIOGRAPHY OK ECONOMIC RELATIONS OF BIRDS 
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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 
agriculture; the roosting season the reverse. 
1897. Judd, Sylvester 1). Methods in Economic Ornithol- 
ogy, with Special Reference to the Catbird. American 
Naturalist, v. XXXI, pp. 392-397. 
Proportions of foods ascertained by examination of stom- 
ach contents; preferences by field observations; shy birds 
caged and various foods offered. 
1897. Kenyon, F. C. The English Sparrow not always a 
Nuisance. American Naturalist, v. XXXI, p. 73. 
Dr. Judd reports fondness for dandelion seeds; saw the 
sparrow catch and devour a cicada. His ability to catch 
insects on wing discussed. 
1897. Kirkland, A. H. The Sugar Maple Borer. Massa- 
chusetts Crop Report, June, 1897, p. 32. 
Presumptive evidence that hairy woodpecker, downy 
woodpecker, and flicker feed on larv;c of Playionotus spe- 
ciosus. 
1897. Lucas, F. A. The Tongues of Birds. U. S. National 
Museum, Report for 1895, pp. 1001-1019. 
i 
Discusses the relation of the tongue to the hyoid, and the 
different forms of development of the two in the various 
groups of birds. 
1897. Owen, Daniel E. Notes on a Captive Hermit Thrush. 
The Auk, v. XIV, pp. 1-8. 
Account of feeding habits of hermit thrush; method of 
determining rate of digestion. 
1897. Palmer, T. S. Extermination of Noxious Animals by 
Bounties. U. S. Department of Agriculture, Year 
Book, 1 8 9 G , pp. 55-68. 
History of bounty system in the United States and other 
countries. Bounties on birds almost invariably pernicious. 
1897. Proctor, Thomas. Disgorgement among Song Birds. 
The Auk, v. XIV, p. 412. 
