Table 36 
FOODS OF WHISTLING SWANS FROM THE UPPER CHESAPEAKE REGION* 


Leaves, Stems, Rootstalks, 
Tubers, Shoots and Buds 
of Submerged Aquatic Plants 
Wildcelery 
Widgeongrass 
Sago Pondweed 
Claspingleaf Pondweed 
Enteromorpha 
Bivalve Mollusks (Pelecypoda) 
Mya arenaria 
Macoma balthica 
Macoma phenax 
Tagelus plebius 
Undetermined 
Rootstalks and Stems of 
Emergent Marsh Plants 
Three-square 
Grass (probably Saltgrass) 
Undetermined 
Fresh Estua- 
rine Bays, 
Birds? 
Brackish 
Estuarine Bays, 
2 Birds? 
100%( 39-100) 71%(55-85) 
100%( 39-100) 
25%(+ ~81) 
108 
69%(52-83) 
21%(10-37) 
54(+ ~17) 
24(+ -13) 
55%( 38-71) 
- 26%(13-))3) 
31%(17-1)8) 
2%(+ -13) 
2%(+ -13) 
2%(+ -13) 
2%(+ -13) 
2%(+ -13) 
Fresh and 
Brackish Estua- 
rine Bay Marsh, 
4 Birds* 
50%(6-9)1) 
50%( 6-911) 
75%(19~100) 
25%(+ -81) 
25%(+ -81) 
25%(+ ~81) 
