174 BIBLIOGRAPHY OF ECONOMIC RELATIONS OF BIRDS 
A general discussion of the economic status of the common 
birds of Ontario, with figures of many species. 
1898. Sanderson, E. Dwight. The Economic Value of the 
White-bellied Nuthatch and Black-capped Chickadee. 
The Auk, v. XV, pp. 144-155. 
Record of food of 23 nuthatches in winter and 11 in early 
spring, and of 19 chickadees in winter and 9 in spring. 
1898. Weed, Clarence Moores. Our Largest Standing 
Army, the Birds. Granite Monthly, v. XXV, pp. 325- 
331. 
Discussion of regulative action of birds. 
189$. W eed, Clarence Moores. The Causes of the Decrease 
of Birds. Granite Monthly, v. XXV, pp. 211-215. 
An illustrated discussion of the subject. 
1898. Weed, Clarence Moores. The Insects Eaten by 
Birds. Agricultural Education, v. I, pp. 4-7, 51-53. 
Illustrated discussion of the insects most commonly fed 
upon by birds. 
1898. Weed, Clarence Moores. The Feeding Habits of the 
Chipping Sparrow. New Hampshire College Agricul- 
tural Experiment Station, Bulletin 55, July, 1898. 
An illustrated account of a day’s work by a pair of chip- 
ping sparrows feeding three young. Nearly 200 visits to the 
nest were made. 
1898. Williamson, E. B. The Economic Importance of 
Some Common Birds. Journal of Columbus Horticul- 
tural Society, v. XIII, pp. 33-44. 
Touches upon the economic importance of many species 
of North American birds, with notes on feeding habits of 
some of them in Ohio. 
1899. Beal, E. E. L. Economic Relations of Birds and 
Their Foods. Proceedings 24th Annual Meeting New 
Jersey State Horticultural Society, 1899. 
A general discussion of the subject. 
