Table 105 
FOODS OF 10 RING-NECKED DUCKS FROM INTERIOR IMPOUNDMENTS 
IN PRINCE GEORGES COUNTY? 
Mast 10% (+-5) 
Pin Oak 10 (+-h5) 
Seeds 30% (6-66) 
Dotted Smartweed 10 (+845) 
Rice Cutgrass 10 (+-5) 
Common Burreed lo (+-h5) 
Squarestem Spikerush lo (+-5) 
Grain 10% (+-45) 
Corn (bait) 10 (+45) 
Animal Food 80% (hh-98) 
Chironomidae larvae 60 (26-88) 
Curculionidae ho (12-7h) 
Libelluloidae nymphs 30 ( 666) 
Trichoptera Larvae 10 ( +-)5) 
1 Collected January 9-March 25. Percentage occurrence of foods that made up 
5% or more of the volume in individual birds. Figures in parentheses show 95% 
165 
