16 INDEX TO PAPERS RELATING TO FOOD OF BIRDS. 



DIVISION OF ENTOMOLOGY. 



Circular 20. [Circular on economic ornithology.] By Dr. C. Hart 



Merriam. [2 pp. of print and 2 blank for answers to questions, 



unnumbered.] July 1, 1885. 



This circular briefly states the general problem of economic ornithology and 



the need of information. Questions relating to the food of 9 species of birds 



denote by implication the economic relations of these birds. The damage done 



in the South by the bobolink and red-winged blackbird is mentioned. 



BIOLOGICAL SURVEY. 



Circular 1. Circular on the food habits of birds. By Dr. C. Hart 

 Merriam. [3 pp., not numbered.] July 20, 1886. 

 This circular consists largely of questions relating to the food habits of the 

 crow, the crow blackbird, and the bobolink. Few direct statements are made 

 regarding the food, but much is implied. 



Circular 2. Circular on the English sparrow (Passer domesticus) . 

 By Dr. C. Hart Merriam. [1 p., unnumbered.] July 20, 1886. 

 Consists entirely of questions concerning the food of the English sparrow 

 and its relations to other birds. 



Circular 5. Circular to rice growers. By Dr. C. Hart Merriam. 

 [1 p., unnumbered, 1886.] 

 Notes damage done to rice by tbe bobolink and red-winged blackbird and 

 contains queries designed to bring out the nature and extent of the injury. 



Circular 17. Bird day in the schools. By T. S. Palmer. 4 pp. 

 July 2, 1896. 

 The history of bird day is given, the manner of its observance, and the 

 objects and value of the day. Notes are given on the economic status of hawks, 

 owls, and the English sparrow, and the bad results from bounty laws aimed 

 against these birds. 



Circular 34. Laws for the protection of birds and game in the 



District of Columbia. By T. S. Palmer. 8 pp. Oct. 25, 1901. 



This circular quotes the Lacey Act. which contains the names of the starling 



and the English sparrow in the clause prohibiting the importation of injurious 



Circular 56. Value of swallows as insect destroyers. By H. W. 

 Henshaw. 4 pp. Apr. 27, 1907. 

 This circular shows the great value of swallows as insect destroyers and the 

 importance of protecting them wherever found. It emphasizes the peculiar 

 value of these birds in the war against the cotton-boll weevil, and asks the 

 cooperation of citizens of Northern States, where these birds chiefly nest, in 

 an effort to increase their numbers. The enemies of swallows, especially the 

 English sparrow, are noted, and suggestions for preventing their attacks, as 

 well as for attracting the swallows themselves, are given. The circular in- 

 cludes also directions for colonizing martins and fur rearing their young. 



