The Food of Birds. 
Ml 
Table of the Food of the Bluebird. ( Sialia sialis, L.) — Concluded. 
s 
Feb. 
March 
April 
May 
June 
July 
Cfi 
3 
be 
3 
• < 
Sept: ll 
Oct. 
> 
0 
£ 
Dec. 
Total 
• 0 
jJJ Q 
<u ^ 
X! © 
U <L> 
rt — 
qj O 
XS 
O ^ 
Number of specimens 
10 
21 
13 
9 
10 
9 
12 
10 
2 
12 
108 
.2 2 
Kimps of Food 
Number of specimens, 
and 
[ ratio in which 
each element of food 
was 
found. 
^ s 
s 
- 
3 
2 
Telephorus 
.08 
.04 
c 
.01 
j 
1 
1 
3 
2 
1 
3 
Curculionidae 
t 
t 
.01 
.01 
.01 
.01 
1 1 
Ceramhycidae 
1 
.01 
1 
.02 
2 
T 
f 
Tetraopes 
1 
.01 
1 
.02 
2 
4 
10 
7 
2 
3 
2 
1 
1 
1 
5. Hvmiptera 
.07 
.04 
.04 
.02 
•05 
.05 
.01 
t 
.01 
3 i 
.04 
* 
4 
1 
Coriscus 
t 
.01 
5 
1 
Alydus 
1 
.04 
3 
7 
4 
2 
3 
1 
1 
1 
Pentatomidae 
.07 
.04 
.02 
.02 
■05 
.01 
.01 
.01 
22 
•03 
7 
13 
5 
6 
2 
5 
12 
9 
6. Orthoptera 
•13 
.21 
.08 
■13 
•03 
.27 
•57 
• 48 
59 
. 2 L 
1 
2 
I 
1 
6 
2 
Gryllidae 
.04 
•03 
.02 
.01 
.28 
. 1 1 
13 
.05. 
1 
4 
I 
Locustidae 
V 
.07 
1 c 
02 
6 
•03 
6 
1 1 
5 
5 
2 
5 
* 1 J 
4 
6 
Acrididae 
.09 
.18 
.08 
. 1 1 
• 03 
.19 
• 14 
•33 
44 
.13 
6 
16 
9 
6 
5 
2 
6 
\3 
1 
11 . Arachnida 
.04 
•°5 
.09 
.21 
.18 
.05 
.06 
.02 
t 
54 
.oS 
6 
8 
2 
1 
2 
III. IULIDAi 
.04 
.01 
.01 
.01 
02 
In 
.or 
J 
3 
4 
3 
5 
6 
3 
1 
12 
IV. Vegetable Food 
.04 
.02 
.02 
. 1 1 
.04 
•03 
.07 
.84 
37 
•13 
Percentages 
> for each month 
cn 
O 
Beneficial elements 
46 
28 
21 
■ic 
*18 
Id 
10 
O'* 
J J 
22 
Injurious elements 
41 
60 
2 3 
O D 
cc 
26 
67 
80 
8r 
02 
do 
Neutral elements 
13 
12 
56 
JJ 
10 
34 
19 
10 
12 
87 
4 S/ 
29 
* Includes 8 per cent, fruit. 
