Passerella il iaoa . 
Watertown, Mass. 
1878. I went carefully through the strip of yellow pines beyond 
Nov. 14. the fcroofc on the Coolidge farm. Among the young growth on 
the edges were large numbers of Fox Sparrows and I was sur- 
prised to hear the males singing finely at intervals, though 
in an undertone. ( This was in the morning). 
Nov. 15. This morning went over nearly the same ground covered 
yesterday. It is not a little remarkable that abundant as 
the Fox Sparrows were yestetday, not one was seen to-day. 
They must have migrated last night. 
