GENERAL DISTRIBUTION OF BIRDS 17 



fifty acres are wooded and two hundred acres cleared. Or, 

 again, nine hundred forty acres are wooded, and four hundred 

 acres are open. 



GENERAL DISTRIBUTION OF BIRDS WITH REFERENCE 

 TO ECOLOGICAL REGIONS 



The chief ways in which the bird life is related to the 

 ecology of a region is through the dependence of the birds 

 upon their environment for food, for nesting sites, and for 

 shelter from the weather and protection from their enemies. 



Different species of birds have different feeding habits. 

 Some are insect eaters, some seed eaters. Some get their food 

 from the water, some from the ground, others from the trees, 

 and some are birds of prey. Birds like the Downy Wood- 

 pecker, Nuthatch, Creeper, Chickadee and Titmouse, get their 

 insect food from the trunks and branches of the trees, while 

 the Vireos, most of the Warblers, the Orioles and others, 

 search the foliage for their insect food. These birds may be 

 looked for among the trees and shrubs. The Meadowlark, 

 Towhee, Crackle, Robin, Water-thrush, Dickcissel and Quail 

 are types of birds that get their food from the ground, and so 

 far as food alone is concerned, they might well be found in 

 either field or wood. But other conditions interfere, and dur- 



