324 NOTES ON NEW ENGLAND BIRDS 



tree sparrows, fox-colored sparrows, and song sparrows. 

 The F. hyemalis with them do not sing so much of late. 

 The first two are most commonly heard together, the 

 fine canary-like twitter of the tree sparrow appearing 

 to ripen or swell from time to time into the clear, rich 

 whistle of the fox-colored sparrow, so that most refer 

 both notes to one bird. 



[See also under General and Miscellaneous, p. 405.] 



