Table 114 
FOODS OF 6 CANVASBACKS FROM SALT ESTUARINE BAYS OF DORCHESTER 
COUNTY, MARYLAND AND SAXIS ISLAND, VIRGINIA? 


Leaves, Stems and Rootstalks 
of Submerged Aquatic Plants | _17% (+-65) 
Eelgrass 17 (+65) 
Grain (bait) _67% (22-96) 
Corn 67 (22=96) 
Wheat 17 ( +-65) 
Animal Food 83% (35-100) 
Undetermined Mollusks 50 (11-89) 
Macoma balthica (Pelecypoda) 33 ( 4-78) 
Congeria leucophaeta (Pelecypoda) 17. ( +*-65) 
Mulinia lateralis (Pelecypoda) 17 ( +-65) 
Mactra sp. (Pelecypoda) 17. ( +65) 
Ac¥eocina canaliculata (Gesteopeda) 17 ( +65) 
Bittium varium (Gastropoda) 17 ( +-65) 
Sayella chesapeakea (Gastropoda) 17 ( +65) 
Callinectes sapidus (Decapoda) 17. ( ++65) 
Polychaeta 17 ( +65) 
1 Collected November=January. Percentage occurrence of foods that made up 
5% or more of the volume in individual birds. Figures in parentheses show 
95% confidence limits. 
173 
