96 



GRASSHOPPERS AND OTHER INJURIOUS INSECTS OF 1911 AND 1912. 



out of their reach. If poisoned pieces of apple or carrot are used in 

 winter, it is a good plan to place the baits on the end of little sticks 

 so that they are conspicuously above the snow. 



A gun, or gun and dog are useful agents to use against rabbits. 

 They also readily fall victims to the old-fashioned "figure four" 

 trap, and in the woods to snares, as every boy knows. Among rap- 

 torial birds, found in Minnesota, which prey upon rabbits are 



Fig. 68. A tree ■ bridge-gratted." Ohio Experiment Station. 



Marsh Hawks, Coopers Hawks, Red-tailed and Red-shouldered 

 Hawks, the Long-eared and Short-eared Owl, the Barred Owl and 

 the Great Horned Owl ; the indiscriminate slaughter of these must 

 have a more or less direct effect upon the number of rabbits. The 

 fact, too, that in some states, the open season for rabbits is very 

 short, and that on many farms and large estates, no hunting is 

 allowed, help their increase. 



