THE RETURN OF THE BIRDS 19 



gist will direct you where to look for the greenlets, 

 the wood sparrow, or the chewink. In adjoining 

 counties, in the same latitude, and equally inland, 

 but possessing a different geological formation and 

 different forest-timber, you will observe quite a 

 different class of birds. In a land of the beech and 

 sugar maple I do not find the same songsters that I 

 know where thrive the oak, chestnut, and laurel. 

 In going from a district of the Old Red Sandstone 

 to where I walk upon the old Plutonic Eock, not 

 fifty miles distant, I miss in the woods the veery, 

 the hermit thrush, the chestnut-sided warbler, the 

 blue-backed warbler, the green-backed warbler, the 

 black and yellow warbler, and many others, and 

 find in their stead the wood thrush, the chewink, 

 the redstart, the yellow throat, the yellow-breasted 

 flycatcher, the white-eyed flycatcher, the quail, and 

 the turtle dove. 



In my neighborhood here in the Highlands the 

 distribution is very marked. South of the village 

 I invariably find one species of birds, north of it 

 another. In only one locality, full of azalea and 

 swamp-huckleberry, I am always sure of finding the 

 hooded warbler. In a dense undergrowth of spice- 

 bush, witch-hazel, and alder, I meet the worm-eat- 

 ing warbler. In a remote clearing, covered with 

 heath and fern, with here and there a chestnut and 

 an oak, I go to hear in July the wood sparrow, and 

 returning by a stumpy, shallow pond, I am sure to 

 find the water-thrush. 



Only one locality within my range seems to pos* 



