Table 70 
FOODS OF 8 PINTAILS FROM INTERIOR IMPOUNDMENTS ADJOINING AGRICULTURAL FIELDS* 

Grain 62% ( 2h-91) Seeds (con't) 
Corn 62 ( 2h-91) Little Partridge-pea 12% (+-53) 
Seeds 88_ (¢ 47-100) Marsh Smartweed 12 (#53) 
Largeseed Smartweed 50 ( 15-85) Nodding Smartweed 12 (+-53) 
Crabgrass 38 ( 8-76) Claspingleaf Pondweed 12 (+#-53) 
Fall Panicum 25 ( 3-66) 
Leaves of Herbaceous Plants 12. (+-53) 
Panicum 25 ( 3-66) 
Grass (Gramineae) 12 (+-53) 
Foxtail~grass 25 ( 3-66) 
Ladysthumb 25 ( 3-66) Animal Food 12. (+-53) 
Paspalum (Paspalum laeve) 12 ¢ 
+-53) Libelluloidea nymphs 12 (+-53) 
1 7 from Chester River Section during late fall and winter; 1 from Patuxent Wildlife Research Center 
in early spring. Percentage occurrence of foods that made up 5% or more of the volume in individual 
birds. Figures in parentheses show 95% confidence limits. 
Table 71 
FOODS OF 5 PINTAILS FROM MARGINS OF BRACKISH ESTUARINE BAYS IN 
THE CHESTER RIVER-—-EASTERN BAY AREA? 
Seeds a 80% (28-100) Leaves, Stems and Rootstalks of 

Submerged Aquatic Plants 608( 1-95) 
ae ue st fe bo) Widgeongrass 20 ( +72) 
Nodding Smartweed 20 ( +-72) 
Claspingleaf Pondweed 20 ( +~72) 
Largeseed Smartweed 20 ( +72) 
Common Waterweed 20 ( +-72) 
Olney Three~square 20 ( +=72) 
Widgeongrass 20 ( +-72) Animal Food _hO ( 5-86) 
Claspingleaf Pondweed 20 ( +-72) Bittium varium (Gastropoda) 20 ( +-72) 
Grain _20 ( #72) Cyathura sp. (Isopoda) 20 ( +-72) 
Corn 20 ( +-72) Amphithoidae 20 ( +-72) 

1 Collected during late fall and winter. Percentage occurrence of foods that made up 5% or more of 
the volume in individual birds. Figures in parentheses show 95% confidence limits. 
135 

