BB 


Table I. - Number of Breeding Pairs and Broods Per Square Mile on the 
Roseneath Study Area, 1952, 1953, 1954, and 1955. 

Pairs Per Square Mile Broods Per Square Mile 
Species 1952 1953 1954 . 1955 1952 1953 1954 1955 
Mallard 36.0 32.7 27,3 22.0 13.3 16.7 6.0 11.3 
B-w. Teal 20.7 18.0 23.3 16.0 14.0 15.3 5.3 10.7 
Pintail 7.3 4.0 8.0 4.7 2.0 Zz. 0 7 z.0 
Baldpate 8.0 8.7 10.0 8.0 4,0 2.7 .7 Z.7 
Shoveler 2.7 2.0 3.3 z2.0 rer 2.7 1,3 7 
G-w. Teal 323 z.0 3.3 - 1,3 ca _7 - 
Ganvasback 8.0 6.7 6.7 5.7 Buard 8.0 5.3 6.0 
Gadwall Z2,0 2.0 1.3 z.0 my .7 - .7 
Redhead z.7 6.7 4.0 3.3 2.7 4.0 4.7 z2.0 
L. Scaup a 1.3 1.5 - - uF < 2 
Ruddy Duck 2.7 6.7 9.3 10.0 4.7 6.0 5.3 7.3 
Unidentified - - - - aah wt .7 - 
Total 94.1 90.8 97.8 73.7 49.4 60.2 30.7 43,4 
Reduction of breeding pairs 1954 to 1955 is 25 percent. 
1955 increase in broods over 1954 was 29 percent but still not to levels 
attained in 1952 and 1953. 
