40 
Psyche 
[February 
TABLE NO. 3. 
Extent of Feeding by Birds on Experimental Material in the Spring of 1924. 
Experiments on which birds fed. 
Locality 
Date Placed 
1923 
Date Examined 
1924 
Total larval 
expectancy 
Number of 
larvae recovered 
Apparent num- 
1 ber of larvae 
taken by birds 
“ 
1 
Per cent of 
larvae taken 
by birds 1 
Per cent of 
larvae taken 
by birds. 2 
Arlington, 
Mass. 
11-14 
4-13 
310 
125 
185 
‘ 59.6 
57.4 
Attleboro, 
Mass. 
11-28 
4-11 
310 
81 
229 
73.8 
72.4 
Beverly, 
Mass. 
11-14 
4-11 
310 
203 
102 
32.9 
29.2 
Brewster, 
Mass. 
11-24 
4-14 
310 
81 
229 
73.8 
72.4 
Cohasset, 
Mass. 
11-20 
4-11 
310 
201 
109 
35.1 
31.6 
Falmouth, 
Mass. 
11-23 
4-12 
310 
118 
192 
61.9 
59.8 
Harvard, 
Mass. 
11-23 
4-12 
310 
241 
69 
22.2 
19. 
Leominster, 
Mass. 
11.23 
4-10 
310 
105 
205 
66.1 
64.2 
Marshfield, 
Mass. 
11-20 
4-12 
310 
203 
102 
32.7 
29.2 
Medford, 
Mass. 
11-3 
4-25 
310 
99 
211 
68. 
66.3 
Milton, 
Mass. 
11-23 
4-12 
310 
131 
179 
57.7 
55.4 
Newbury, 
Mass. 
11-14 
4-11 
310 
62 
248 
80. 
78.5 
Rockport, 
Mass. 
11-14 
4-10 
310 
119 
201 
64.8 
59.5 
Southboro, 
Mass. 
11-27 
4-10 
310 
77 
233 
75.1 
73.4 
Wellfleet. 
Mass. 
11-24 
4-14 
217 
76 
141 
64.9 
63.1 
Woburn, 
Mass. 
11-14 
4-12 
310 
237 
73 
23.5 
19.3 
Experiments on which birds did not feed 
Andover, 
Mass. 
11-19 
4-16 
310 
180 
Bridgewater, 
Mass. 
11-27 
4-10 
310 
262 
Concord, 
Mass. 
11-16 
4-12 
310 
256 
Foxboro, 
Mass. 
11-28 
4—1 1 
310 
262 
Gardner, 
Mass. 
11-29 
4-20 
310 
357 
Hingham, 
Kingston, 
Mass. 
11-20 
4-12 
170 
137 
(partly destroyed) 
Mass. 
11-24 
4-12 
310 
414 
Marblehead, 
Mass. 
11-15 
4-12 
310 
388 
Mattapoisett, 
Mass. 
11-27 
4-10 
310 
387 
Medfield, 
Mass. 
11-24 
4-11 
310 
318 
Methuen, 
Mass. 
11-19 
4-16 
310 
256 
Natick, 
Mass. 
11-23 
4-10 
310 
346 
Needham, 
Mass. 
11-16 
4-14 
310 
268 
Provincetown, 
Mass. 
11-24 
4-14 
310 
325 
Sandwich, 
Mass. 
11-23 
4-11 
310 
333 
Saugus, 
Mass. 
11-14 
4-11 
310 
303 
Touisset, 
Mass. 
11-28 
4-10 
310 
228 
Worcester, 
Mass. 
11-27 
4-10 
310 
228 
Westford, 
Mass. 
11-15 
4-12 - 
310 
357 
Biddeford, 
Me. 
11-22 . 
4-14 
310 
328 
Kittery, 
Me. 
11-22 
4-14 
310 
285 
Scarboro, 
Me. 
11-22 
4-14 
310 
295 
Wells, 
Me. 
11-22 
4-14 
310 
232 
Bedford, 
N. H. 
11-21 
4-17 
310 
281 
Bristol, 
N. H. 
11-22 
4-16 
310 
228 
(partly destroyed) 
Concord, 
N. H. 
11-21 
4-16 
263 
203 
Farmington, 
N. H. 
11-21 
4-16 
310 
340 
Franklin, 
N. H. 
11-21 
4-16 
310 
181 
Hampton, 
N. H. 
11-22 
4-14 
310 
366 
Hillsboro, 
N. H. 
11-21 
4-16 
310 
200 
Kingston, 
N. H. 
11-20 
4-28 
310 
276 
1 Based on the average larval contents of stalks in the fall. 
2 Based on the average larval recovery at stations not attacked by birds. 
