Table 15. Number of dead birds and number and percentage of dead Ruddy Ducks 

 found after major oiling incidents. 



Area 



Dates 



Number Number Percent- 



of oiled of dead age of 



dead Ruddy Ruddy 



birds Ducks Ducks 



Source 



San Francisco 

 Bay area, Cal- 

 ifornia 



Mar. 1937 



397 (a) 



0.50 



Aldrich 1938 



San Francisco 

 Bay, California 



Delaware River, 

 Pennsylvania 



Delaware River, 

 New Jersey 



Delaware River , 

 Pennsylvania 



Delaware River, 

 Pennsylvania 



Chesapeake Bay, 

 Virginia 



Delaware River, 

 Pennsylvania 



Chesapeake Bay, 

 Virginia 



Jan. 1971 3,221 (a,b) 41 1.27 



Dec. 1973 4,000 (c) 3,960 99.0 



Feb. 1974 3,500 (a) 3,430 98.0 



Apr. 1974 



500 (a) 490 



Jan. 1975 2,500 (a) 2,525 



Feb. 1976 30,000 (a) 350 



98.0 



99.0 



1.2 



Dec. 1976 2,000 (a) 1,720 86.0 



Feb. 1978 10,000 (a) 90 0.9 



Small et al. 

 1972 



Perry et al. 

 1979 



Perry et al. 

 1979 



Perry et al. 

 1979 



Perry et al. 

 1979 



Perry et al. 

 1979 



Perry et al. 

 1979 



Perry et al. 

 1979 



(a) Total includes only those birds identified to species. 



(b) This figure represents birds brought to cleaning/ receiving stations. 



(c) Figure is an estimate based on counts of dead birds. 



462 



