38 Fry, Seasonal Decline in Bird Song. [j,^, 



ported only six times — July 5, 9, 17, 20 and 22, and August 3. 

 Each time the song was full and rich. 



The White-eyed Vireo (Vireo griseiis grueus) was recorded eight 

 times — July 6, 15, 16, 20, 22, 29 and 31, and August 7. In each 

 case the songs were full, though perhaps the last one heard showed 

 a slight diminution. 



The Phoebe {Sayornis phoebe) was heard but three times — July 

 9 and 20, and August 1, and on each occasion it was giving the 

 "phoe-be" call repeatedly. 



There are three song records for the Purple Finch (Carpodacus 

 purpureus purpureus) — July 4 and 16, and August 3. The song 

 was full on all three occasions. 



The Carolina Wren {Thryothorus hidomcianus ludovicianus) 

 was heard but rarely after 6.00 a.m., though in a certain locality 

 it was heard daily in full song about 4.00 a.m., up to August 1. 

 Since no 4.00 a. m. observations were made after that date, it is a 

 question whether or not the early morning matins were continued. 

 The data are not sufficiently full to allow any conclusion. 



The two-note warble-whistle of the Baltimore Oriole {Icterus 

 galbula) was heard throughout the period, as was the scold-note 

 The song had declined before July 1, leaving as a residue the two- 

 note whistle which remained about constant throughout the period, 

 hence no statement can be given. 



The Brown Thrasher (Toxostoma rufum) was seen a number of 

 times, but only his harsh call-note was heard. 



The list following contains those birds, included in the graphical 

 chart, on which the observations were not quite as full as was 

 desired, and therefore statements concerning their decline have 

 been made with some caution: — 



Kingbird Barn Swallow 



Cowbird Field Sparrow 



Meadowlark Grasshopper Sparrow 



There is some doubt concerning the following birds, as to whether 

 or not any decline in their song had begun prior to July, first : — 



(Robin) Cowbird 



Kingbird Meadowlark 



Red-winged Blackbird 



