Table 44 
ECOLOGICAL DISTRIBUTION OF MALLARDS DURING THE 1958-59 SEASON 



Octe2-10, Nov.3-12, Dec.el-12, Jan.7-13, Mar.3-16, 
1958 1958 1958 1959 1959 
Shallow Estuaries with Extensive 
Adjacent Agricultural Lands 50% 134 85% 82% 86% 
Brackish Estuaries (2) (51) (76) (82) (76) 
Fresh and Slightly Brackish 
Estuaries ( 8) (22) ( 9) ( +) (10) 
Estuarine River Marshes _& 14g _5S 1% _9% 
Estuarine Bay Marshes pals ls _5h 12% _1% 
Fresh Bay Marshes ( 7) ( 3) ( 5) (11) ( +) 
Brackish Bay Marshes ( 3) ( +) ( +) ( +) ( +) 
Salt Bay Marshes ( 1) ( 1) ( +) (1) (1) 
Coastal Salt Marshes and Adjacent 
Impoundments 2h 34 it 24 2h 
Miscellaneous Habitat Mixtures _9% _6% _Us _3% 2% 
Total Populations 3,000 23,000 4,8, 200 55,800 18, 300 
Table 45 
BIOGEOGRAPHICAL DISTRIBUTION OF MALLARDS DURING WINTERS OF 1955-58 
Blackwater-Nanticoke Section 35% Upper Potomac Section 1% 
Chester River Section 32% Patuxent River Section 1% 
Eastern Bay Section — 8% Susquehanna Flats Section 1% 
Choptank River Section 7% Upper Western Shore Section 1% 
Upper Eastern Shore Section 7% Lower Potomac Section +% 
Coastal Section 3% Central Western Shore Section +% 
Lower Eastern Shore Section 3% Lower Western Shore Section 0 
Central Potomac Section 1% 
Total 100% 
115 
