364 



BIRDS OF PENNSYLVANIA. 



SCREECH OWL, Continued. 



Summary. Of 94 stomachs examined. 1 contained poultry; 20, other birds; 41, mice; 1. other mammal; 

 1, frog ; 35, insects ; 3, crawfish ; 1. spider ; 1 indeterminate matter, and 7 were empty 



GREAT-HORNED OWL (Bubo virginianus). 



