36 METHODS OF ATTRACTING BIRDS 



ture of bread-crumbs and hard-boiled eggs, and 

 some prepared food for soft-billed birds, fur- 

 nished by a bird-dealer. In this way a few birds 

 were successfully reared. 



The following account of another experiment 

 along this line is taken from Circular No. 56 by 

 H. W. Henshaw of the Bureau of Biological 

 Survey : 



" In the Zoological Gardens of Philadelphia, 

 in 1889, Mr. Robert D. Carson, by means of a 

 trap-house, secured a colony of nine pairs with 

 thirty-two young from the grounds of Mr. Josiah 

 Hooper of West Chester, transporting them the 

 distance of about twenty miles by train at night. 

 When released next morning the old birds de- 

 serted the young and returned to West Chester* 

 The temptation of the old home so close by 

 proved too strong even for parental affection. 

 Most of the young, however, were successfully 

 raised by hand-feeding, being fed chiefly cock- 

 roaches, grasshoppers, crickets, meal-worms, and 

 prepared food. This is a mixture intended for 

 insectivorous birds, and according to Mr. Carson 

 was well liked by the nestlings and agreed well 

 with them. It consists of ground and dried beef- 

 heart, mawmeal, ground zwieback, boiled and 

 mashed white potatoes, grated raw carrot, and 

 grated hard-boiled eggs. Probably any similar 



