OUR BIRDS FROM AN ECONOMIC STANDPOINT. 355 



Of 107 stomachs of long-earecl marsh owl examined, one con- 

 tained a game bird ; fifteen, other birds ; eighty-four, field mice ; 

 five, other mammals ; one, insects, and fifteen were empty. 



Of loi stomachs of the short-eared marsh owl, eleven contained 

 small birds ; seven, field mice ; seven, other mammals ; seven, insects, 

 and fourteen were empty. 



Of 109 stomachs of the barred owl, five contained poultry or 

 game ; thirteen, other birds ; forty-six, mice ; eighteen, other mam- 

 mals ; four, frogs ; one, a lizard ; two, fish ; fourteen, insects ; two, 

 spiders ; nine, crayfish, and twenty were empty. 



Of 255 stomachs of the screech owl, one contained poultry ; 

 thirty-eight, other birds ; ninety-one, mice ; eleven, other mammals ; 

 two, lizards; four, frogs or toads; one, fish; 100, insects; five, spid- 

 ers ; nine, crayfish ; seven, miscellaneous material ; two, scorpions ; 

 two, earthworms, and forty-three were empty. 



Of 127 stomachs of the great horned owl, thirty-one contained 

 poultry or game birds ; eight, other birds ; thirteen, mice ; sixty-five, 

 other mammals ; one, a scorpion ; one, a fish ; ten, insects, and seven- 

 teen were empty. 



Of 320 stomachs of the sparrow hawk, one contained a game 

 bird ; fifty-three, other birds ; eighty-nine, mice ; twelve, other mam- 

 mals ; twelve, reptiles, or Amphibians; 215, insects; twenty-nine, 

 spiders and twenty-nine were empty. 



Of 562 stomachs of the red-tailed hawk, fifty-four were found 

 on examination to contain poultry and game birds ; fifty-one, other 

 birds; 278, mice; 131, other mammals; thirty-seven. Amphibia, or 

 reptiles ; forty-seven, insects ; eight, crayfish ; one, a centipede ; thir- 

 teen oflfal, and eighty-nine were empty. 



Of 220 stomachs of red-shouldered hawk examined, three con- 

 tained poultry; twelve, other birds (crow, robin, meadow-lark, spar- 

 row, black-bird, etc.); 102, mice; forty, other mammals (shrews, 

 oppossum, skunk, chipmunk, mole, rabbit, squirrel, etc.) ; twenty, 

 reptiles; thirty-nine. Amphibia; ninety-two, insects; sixteen, spiders; 

 seven, crayfish ; one, earthworms ; two, offal ; three, fish, and four- 

 teen were empty. 



Out of 103 stomachs of Cooper's hawk, thirty-four contained 

 poultry or game birds ; fifty-two, other birds ; eleven, mammals ; one, 

 a frog; three, lizards; two, insects, and thirty-nine were empty. 



The last three hawks are commonly spoken of as chicken hawks. 



Of sixty-three stomachs of the golden eagle, one contained fish; 

 two, mammals (squirrels and rabbits); two, carrion, and one was 

 empty. 



Of twenty-one stomachs of the bald eagle, two contained game 

 birds; five, mammals (prairie dogs, mice, roaches and portions of 

 mule deer) ; two, carrion, and five were emptv. 



It would almost seem then that we can classify birds under the 

 heads of beneficial birds, doubtful birds and decidedly injurious. 



Among notes favorable to birds I find that Prof. C. B. Riley, in 

 the 6th Report on Missouri Insects, says the following birds destroy 

 the canker worm, viz : the king bird, purple grackle, all the vireos, 



