22 USEFUL BIRDS. 
ther on, in connection with their relations to forestry and 
agriculture. 
Taken all in all, the relations of birds to the natural world 
are beneficent. Evidently birds are an essential part of 
nature’s great plan. This being the case, they must be 
serviceable to man also, for man, the animal, is a mere inte-. 
gral part of nature. 
