530 
ECONOMIC RELATIONS OF OUR BIRDS. 
Tabular Summary of Economic Relations of Finches — continued. 
Number and Name op Speci¬ 
mens Examined. 
3 
T) 
0) 
Of eight Rose-breasted 
Q* 
d 
Grosbeaks examined 
O 
3 
o 
O 
Classification 
OF Food. 
Animal food . . 
Vegetal food , 
Ratios Represented by Lines. 
8 Unknown. 
Of nineteen Indigo- 
bii’ds examined. 
5 
18 
2 
3 
'g 
a 
S 
;=l 
o 
O 
Animal food 
Vegetal food 
Detrimental 
Unknown 
I 
Of seventeen Marsh 
Robins examined.... 
11 
14 
!X> 
CJ 
1 
"3 
5 
"S 
o 
o 
8 
Animal food.. 
Vegetal food. 
1 
12 
19 
Beneficial .. 
Detrimental 
Unknown..., 
j- 
Table showing the kinds and number of insects, spiders, myriapods and snails 
eaten by the Finches. 
Number and Name of Speci¬ 
mens Examined. 
Classification 
OF Food. 
1 
1 
Caterpillar. 
Of nine Purple Finches 
1 
q:) 
0 
50 
Plant-lice. * 
examined. 
1 
50 
Adult forms. 
O 
1 
1 
Larve . 
Ratios Represented by Lines. 
Of thirty-fonr Thistle- 
birds examined. 
a 
3 
4 -» 
C 
o 
o 
20 
Plant-lice. 
20 
Adult forms. 
1 
o 
o 
Lepidoptera. 
Of ten Savanna Spar- 
. 
1 
1 
Adult form. 
i 
1 
0 
O 
O 
1 
Larve . 
i 
Of thirty-six Bay¬ 
winged Buntings ex¬ 
amined . 
3 
1 
1 
14 
4 
1 
17 
4 
1 
'3 
rt 
o 
o 
Moths. 
Diptera. 
Ants. 
Beetles. 
Grasshoppers .... 
Snails. 
72 
10 
8 
Adult forms. 
Larvm. 
Grasshopper eggs. 
