145 Brattle Street, Cambridge, Mass. 
January 25, 1893. 
Dear Sir : — 
During the early part of the present winter Cam- 
bridge, Massachusetts, was visited by an unusual number of 
Pine Grosbeaks (Pinicola enucleator) which, after exhausting 
the food supply, departed very suddenly. I wish to trace, if 
possible, the routes which they followed and the total area 
covered by their migration. You can aid me in this by kindly 
answering the following questions in the spaces left for that 
purpose. Please write your name and address on the dotted 
lines at the head of this page. 
1. Have any Pine Grosbeaks appeared in your neighborhood 
this winter? (Reports of their apparent absence will be quite 
as useful as records of their occurrence.) 
2. When were the first seen and at what date were they 
most numerous? (Approximate dates will be much better than 
/tr4' 
