GENERAL ZOOLOGY 



is serviceable, but it does so much damage to game, poultry, 

 fruit, and grain that it more than counterbalances the good, 

 and 'should be reduced in numbers. The crow-blackbird 

 appears to be purely beneficial to these farms during the 



7 days or less 



1 to 2 weeks old 



BEETLES ^VERTEBRATES 



3 weeks and older adult 



FIG. 208. Diagram of Crow-Food 

 (From Judd's Birds of a Maryland Farm) 



breeding-season, and feeds extensively on weed-seed during 

 migration, but at the latter time it is very injurious to grain. 

 The remaining species probably do more good than harm and, 

 except under unusual conditions, should receive encourage- 

 ment by the owners of the farms. Certain species, such as 



