Table 54 
ECOLOGICAL DISTRIBUTION OF BLACK DUCKS DURING THE 1958-59 SEASON 


Oct. 2-10 , Nov.3-12 r Deco.1l-12 r Jan. T- 13, Mar. 3-16, 
1958 1958 1958 1959 1959 

Shallow Estuarine Bays with Extensive 
Adjacent Agricultural Lands 50% 59% 62% 69% 61% 
Brackish Estuaries (4h) (51) (59) (68) (50) 
Fresh and Slightly Brackish 
Estuaries ( 6) ( 8) ( 3) (1) (11) 
Estuarine Bay Marshes 26% 13% pur 1s 13% 
Salt Bay Marshes (15) ( 8) ( 8) (10) (9) 
Fresh Bay Marshes ( 6) ( 3) ( 3) ( 2) (2) 
Brackish Bay Marshes (5) ( 2) (3) ( 2) ( 3) 
Coastal Salt Marshes and Adjacent 
Impoundments 10% 13% 12h 10% ile 
Estuarine River Marshes 10% _o% _2% _2% 5h 
Miscellaneous Habitat Mixtures _L% _9% _%% _5% 10% 
Total Populations 12,900 51,500 111,700 108 ,800 32,300 

121 
