28 BULLETIN 619, U. S. DEPARTMENT OF AGRICULTURE. 
TABULAR SUMMARY. 
The following table shows the relative proportions of the most im- 
portant elements of the food of the seven species of swallows : 
Food items. 
Purple 
martin, 
Barn 
Tree 
Violet- 
Bank 
Rough- 
swal- 
low. 
swal- 
low. 
green 
swal- 
low. 
swal- 
low. 
winged 
swal- 
low. 
Per 
Per 
Per 
Per 
Per 
cent. 
cent. 
cent. 
cent. 
cent. 
1.96 
1.92 
4.12 
5.78 
4.93 
13.66 
12.50 
6.45 
12.12 
9.90 
9.89 
6.37 
9.42 
13.39 
11.99 
12.82 
7.58 
17.48 
20.10 
18.91 
15.10 
5.59 
35.96 
7.96 
14.90 
39.49 
40.54 
19.36 
26.63 
32.89 
2.39 
1.07 
3.12 
1.21 
1.11 
.51 
.38 
.01 
.12 
3.72 
4.25 
4.09 
12.64 
4.48 
.28 
.34 
.14 
.56 
.18 
19.46 
.02 
.21 
Aver- 
age for 
the 
seven 
species 
of swal- 
lows. 
Weevils 
Other beetles 
Ants 
Other Hymenoptera . 
Hemiptera 
Diptera 
Lepidoptera 
Orthoptera 
Other insects 
Other animal food . 
Per 
cent. 
2.63 
9.90 
3.52 
19.47 
14.58 
16.09 
9.39 
1.09 
22.87 
Per 
cent. 
8.38 
18.50 
8.24 
20.51 
26.32 
13.25 
.46 
.71 
2.56 
.41 
Vegetable food . 
Per 
cent. 
4.25 
11.86 
8.97 
16.70 
17.20 
2.68 
.40 
7.80 
.31 
2.93 
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