= t5= 
Table 7.-=Plants most often represented in 285 mallard 
scomachs, filinois Valley, L9de. 
nn i | A 
a 
Corn (Zea indenta) 452.7 40 
Saw grass (Leersia oryzoides) 168.6 als) 
Smartweed (Polygonun Muhlenbergii) GuG 6 
Nut grass (Cyperus esculentus) 42.5 4 
Coontail (Ceratophyllum demersum) Bll 2 3 
Pondweed (Potamogeton americanus) Liv at 
——— 
“Volume expressed in cubic centimeters. 
*xBased on a total volume of 1,107.5 cubic centimeters 
of plant food. 
Pintail.--Nineteen plant and 11 animal species were identi- 
fied from 62 pintail stomachs. The five most important of these are 
dlisted in table 8 with comparative ratings. 
Table 8.--Plants most often represented in 62 pintail 
scomacis, Liiineis Valley, 1968. 
-_—— eee ES eee 
Plant Volume Per Cenbe 
Corn (Zea indenta) 152.8 56 
Nut grass (Cyperus esculentus) OG i 8 
Buckbrush (Cephalanthus) 12.9 6 
Saw grass (Leersia oryzoides) 74 3 
Spike rush (Eleocharis) 56 © 
*Volume in cubic centimeters. 
xxBased on a total volume of 234.5 cubic centimeters of 
plant food. 
Animal foods were relatively unimportant in mallards and 
pintails killed during the period November 6-27. 
