
Table IV.- Duck Species Index, Stratum D, Manitoba - Saskatchewan River Delta, 



1954 - 1955, 
Species Change % 
Composition Species Index 2-Year From From 
Species 1954 1955 1954 1955 Average 1954 Aver. 
Mallard 22.8 12.2 16, 883 23,895 20, 389 + 41.5 + 17.2 
Black Duck - - - - - - is 
Gadwall - 4 - 880 - - é 
Baldpate 3.6 4.1 2,666 8,063 5, 364 4202.4 + 50.3 
Pintail 8.3 19.3 3,925 37,823 20, 874 +896,2 + 81.2 
Gew. Teal Tr. 9 - 1, 759 - - - 
B-w. Teal 2.0 1.4 1,481 2, 785 2,133 + 88.0 + 30.6 
Shoveler 1.6 .3 1,185 439 812 - 62.9 - 31.5 
Merpanser 1.4 4.0 1,036 7,916 4,476 +664.1 + 76.8 
Redhead 3.4 2.8 2,518 5,424 3,971 +115.4 + 36.6 
Ringneck 3.6 2.7 2,666 5,278 3,972 + 98.0 + 32.9 
Canvas back 7.1 5.6 5,257 10,995 8,126 +109.1 + 35.3 
L. Scaup 44.5 44.3 32,952 86,787 59,869 +163.4 + 45.9 
Goldeneye .8 .7 592 1,319 955 4122.8 + 38.1 
Ruddy Duck _3 - 222 - - - - 
Bufflehead 3 .6 222 1,173 697 +428.3 + 68.3 
Scoter 3.3 ae 2,444 1,466 1,955 - 40.0 - 25.6 
Total Ducks 74,049 196,002 135,025 +164.7 + 45.1 
C. Goose 162 84 123 - 48.1 - 31.7 

