Table II - Trend in Manitoba's Breeding Duck Population, 1950-1952 
a a re 
(Based on Aerial Transects) 
Strata Size of Strata IND I CE S * 
Sq. Miles 1950 1951 1952 
i ge 
A 10, 368 457,229 326, 592 246, 758 
B 28, 600 297, 440 165, 880 143, 300 
Cc 67,628 101, 442 74, 390 81,150 
D 3,964 162,524 78, 490 74, 520 
a eT 
110, 560 1,018, 635 645, 352 545,728 
Percent decrease from 1950 “ 37 46 
Percent decrease from 1951 - - 15 
* Indices were obtained by multiplying the size of each strata by the ducks 
per square mile (aerial count) for that strata. No corrections have been 
made for phenological differences between seasons. 

Table [III - Summary of Waterfowl Banded in Manitoba - July 3 to September 23 
; Adult Immature Adult Immature 
SHeGIES Male _ Male Female Female Boe 
Mallard 233 717 129 721 1, 800 
Black duck 26 - 2 4 32 
Gadwall - 13 1 8 22 
Baldpate ] 32 1 31 65 
Pintail 5 164 28 184 381 
G-w. teal 7 135 14 111 267 
B-w. teal 182 2, 866 52 2, 889 5,989 
Shoveler - 8 1 18 27 
Wood duck l - - - 1 
Redhead 5 417 33 510 965 
Ringneck - 2 - 1 3 
Canvasback 1 17 6 15 39 
Lesser scaup - - 1 - 1 
Ruddy duck - - - 1 1 
Total ducks 461 4,371 268 4,493 9,593 
Coots 17 Juveniles 17 
