77 
The first survey July. 14 to 18 was made at time that would normally be near 
the peak of the brood season. However, these data indicate that in 1954 the hatch 
was just commencing at that time. This is borne out by the age ratio of broods in 
Stratum A as shown in Table [X,. 
Table [IX .- RES Class Composition of Broods Seen on Ten Transects of 
Manitoba Stratum A - 1954 

CLA SS I CLASS II CLASS III 
July 14-18 (108 aged broods) 59% 35% 6% 
July 28-August 2 (300 aged broods) 40% 41% 19% 
During the early survey most of the broods were still in Class I; two weeks 
later the rate of hatching was tapering off and only 40 percent of the brood were in 
thatclass. Table X indicates the species composition for Stratum A throughout the 
season and includes pairs, broods and potential later broods. 
Table X .- Species Composition of Waterfowl Populations, Manitoba Stratum A, 1954. 
July 14-18% July 28-Aug. 2* 
Species May Pairs Broods Pot. Ltr. Br. Broods Pot. Ltr. Br. 
Pintail 10.1 20.3 Ta l 9.5 11.5 
Mallard 56,2 28.8 36.8 43.9 40.3 
Baldpate 2.7 0 8.0 2.3 hd 
Shoveler ara 0 Lee 0 0 
Gadwall ara | 0 4.2 £3 8.7 
B-w. teal** 12.6 13.6 14,5 16,2 16.1 
G-w. teal*¥* 8 - 3.0 - ~ 
Scaup 15.6 3.4 8.0 8.7 9.2 
Canvasback 7.4 16.9 a8 7.5 2.3 
ing -necked 1.0 0 3 0 0 
Redhead 3.7 15,3 4.4 - 5.8 1.1 
Ruddy . 1.0 1.7 8.6 2.9 12.7 
Golden-eye 6 0 pa) 0 0 
Bufflehead 1,1 0 wed .6 0 
Scoter =p! 0 0 0 
Merganser al 0 0 0 0 
* The same 10 transects serve as a basis for indices during both July runs. 
** During the brood season, increasing difficulty was experienced identifying 
Green-winged teal. Thus the Blue-winged teal column in July actually 
represents all teal. 
