DELAWARE VALLEY ORNITHOLOGICAL CLUB. 21 



The brilliant Blackburnian Warbler is common among the 

 well-grown spruces. The song is characterized by the excep- 

 tional thinness of the last few notes. Sometimes this feature is 

 not very well marked. The nest is doubtless placed well up, 

 in evergreens. I have not yet succeeded in finding one. 



The drawling, though very attractive, notes of the Black- 

 throated Green Warbler are frequently heard, coming from 

 high up in large white pines. One form of the song may be 

 indicated by the words "Trees, trees, wavering trees," the 

 other by "Trees, trees, trees, tree, so shady." A nest, found 

 last summer, was placed in the crotch of an ascending, dead 

 branch of a large white pine, about twenty feet from the ground, 

 and about the same distance from the trunk. There was no 

 living foliage near it and none above, except the crown of 

 the tree. This nest was found by noticing the female pulhng 

 at a string entangled in a tree. When the string was cut into 

 suitable lengths the bird promptly carried them to the unfin- 

 ished nest. The set of eggs was not complete until about 

 July 4th. 



The one or two records of the Pine Warbler leave the status 

 of the bird uncertain . 



The Ovenbird is numerous in well grown woodland. The 

 nesting and other habits appear quite normal for the species. 

 The writer has found several nests, some of them well concealed, 

 others not so. 



The Northern Water Thrush is found along the dashing streams 

 and in the swamps where the current becomes lost among fallen 

 trees and mossy stumps. The nest is well hidden under a root 

 or overhanging bank. The large assemblage of dead leaves 

 which often marks the nest of the Louisiana Water Thrush, does 

 not seem to be a feature of the home of noveboracensis. The 

 difficulty in distinguishing the two water thrushes, in spite of 

 the field marks which are supposed to be useful, renders the 

 status of motacilla doubtful. 



The most notable variation in the habits of the Maryland 

 Yellowthroat, is in the location of the nest. Bunches of grass 

 are used occasionally, but a more usual site is in low-growing 

 huckleberry bushes. The nest is frequently entirely hidden until 



