Bull. 15, Biological Survey, U. S. Dept. of Agriculture. 
Plate IV. 
o 
H 
i^/ 
k 1 
(■*■/ 
^ 
/OXALIS 
?/ 
w 
POLYGONUM 
' GRASS 
SEED \ 
;aterpillars. 
BEETLES 
1. English sparrow. 
GRASSHOPPERS 
2. Grasshopper sparrow. 
3. Chipping sparrow. 
MiSCL 
INSECTS 
SPIDERS AND 
SNAILS 
CRASSHOPPERS 
BEETLES 
MISCL 
WEED SEED/^ 
POLYGONUM 
GRAIN 
V GRASS 
SEED / 
4. Song sparrow. 
/ XfYfV 
/ ragweed\v\ 
^,o^ / \ 
fed: x > 
1 POLYGONUM / 
\ WILD FRUIT 
\ / MISCL \ / 
\ /WEED SEED\ / 
5. Junco. 6. White-throated sparrow. 
Diagram showing Proportions of Food of Six Sparrows. 
