NUMBER OF BIRDS (THOUSANDS) 
90 
80 
70 
60 
‘50 
40 
30 

0 Atlantic Flyway 
1949 1951 1953 1955 1957 1959 1961 1963 
YEAR 
FIGURE C-8.--Trend in numbers of wintering swan, 
Atlantic Flyway, 1949-63. 
101 
