Table 72 
FOODS OF 13 PINTAILS FROM BRACKISH ESTUARINE BAY MARSHES IN DORCHESTER COUNTY+ 
——_ EE ee ee rr re re 
aad AT 
Seeds 85% (54-99) Grain 15% (1-16) 
Widgeongrass 46 (19+75) Corn. 15 (1-6) 
Olney Three-square 23 ( 55h) Leaves, Stems and Rootstalks 
of Submerged Aquatic Plants 38 (13-69) 
Twigrush 23. ( 5-5h) = 
Widgeongrass 31 (9-62 
Cordgrass 23. ( 5=5h) 
Sago Pondweed 8 (+-37) 
Crabgrass 15 ( 1-46) 
Animal Food 31 (9-62) 
Sago Pondweed & ( +-37) oh 
Melampus bidentatus (Gastropoda) 8 (+-37) 
Common Burreed 8 ( +-37) 
Volsella demissa (Pelecypoda) 8 (+-+37) 
Common Three-squere 8 ( +-37) 
Libelluloidea nymphs 8 (+37) 
Walter Millet 8 ( +37) 
Molgula manhattensis (Tunicata) 8 (+-37) 
Saltgrass 8 ( +-37) 
Buttonbush 8 ( +37) 
Blackgum 8 ( +-37) 
Waxnyrtle 8 ( +-37) 
Fall Panicum 8 ( +-37) 
Foxtail-grass 8 ( ++37) 

1 Collected during 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. 
Table 73 
FOODS OF 4 PINTAILS FROM ESTUARINE RIVER MARSHES OF THE PATUXENT RIVER? 


Seeds 100% (39-100) Seeds (con't) 
Dotted Smartweed : 100 (39-100) Tidemarsh Waterhemp 25% (+-81) 
Halberdisaf Tearthumb ‘50 ( 6-9h) Arrow~arum 25 (4-82) 
Common Three-square 50 ( 6&9) Blackgun 25 (+81) 
Wildrice 25 ( +-81) 
Animal Food 25_ (+-81) 
Softstem Bulrush 25 ( +-81) 
Pisidium atlanticum 
Walter Millet 25 ( +-81) (Pelecypoda) 25 (+-81) 

1 Three collected in October, 1 in March. Percentage occurrence of foods that made up 5% or more of 
the volume in individual birds. Figures in parentheses show 95% confidence limits. 
136 
