Vermont Bird Club 51 



1907 1908 1909 1910 1911 1912 1913 



99 Water thrush, Northern 5-14 5-24 5-21 8-12 



100 Mourning warbler 7-8 5-26 



101 Maryland yellow-throat.... 5-13 5-18 5-14 5-20 5-11 5-12 5-8 



102 Wilson warbler 5-27 .... 5-26 5-31 



103 Canadian warbler 6-4 5-25 5-22 5-30 5-14 5-19 5-25 



104 American redstart 5-17 5-14 5-15 5-22 5- 9 5-12 5- 8 



105 American pipit 9-11 



106 Catbird 5-17 5-12 5-10 5-21 5-13 5-12 5- 8 



107 Brown thrasher 5-7 .... 



108 Winter wren 4-28 4-24 9-7 



109 Brown creeper 2-5 2-3 10-13 10-11 1-18 1- 1 



110 Golden crowned kinglet.. 4- 2 3-30 4-9 .... 10- 7 3-30 10-23 



111 Ruby-crowned kinglet 4-26 4-23 ....10-2 4-27 4-20 



112 Wood thrush 6-3 5-14 5-13 5-27 6-19 5-12 5-24 



113 Wilson thrush 5-2 5-14 5-11 5-13 5-7 5-9 5-8 



114 Olive-backed thrush 5-18 5-21 9-23 



115 Hermit thrush 4-27 4-24 4-23 4- 6 4-22 4-13 4-16 



116 Robin 3-21 3-15 3-27 3-20 3-29 3-20 3-20 



117 Bluebird 3-17 3-13 3-17 3-12 3-13 3- 6 3-16 



AN ECOLOGICAL STUDY OF THE SONG SPARROW 



Dr. H. F. Perkins. University of Vermont 



The Hartland Nature Club has undertaken to increase interest in 

 its work by engaging a number of its members in an intensive study 

 of the song sparrow in a definite restricted area. They have requested 

 me to give an outline suggesting how this work may be accomplished. 

 As is necessarily the case in such a preliminary outline, the most im- 

 portant feature is what is left out, rather than what is included. If 

 the outline can be suggestive to the members of the Club who are 

 making a study so that they will formulate their own program, the 

 purpose will be better served than if it were of such a character that 

 it could be followed in detail. 



A. Apportioning the Problem 



A task of the sort here described can be best accomplished by a 

 comparatively small number of persons, say ten. Each person should 

 be made responsible for a report at the end of the season upon one 

 single phase of the study. While he will be interested in the work 



