20 PROCEEDINGS OF THE 



dijfferent roosts varies greatly and constantly increases up to the 

 middle of September or later. This increase may be partially 

 due to the arrival of migrating birds from the north, but our 

 data points to a combination of the smaller roosts. The depar- 

 ture of the main body of Grackles occurs about the last week in 

 October, two of the observers noting that the roosts are virtually 

 abandoned immediately after the first hard storm takes the 

 leaves off the roosting trees. Further investigation by the 

 members of the Club during the coming summer is expected to 

 bring together much more data for the solution of the problems, 

 suggested by this report. 



