
Much of the production of both prairies and parklands was due to the early hatch as 
evidenced by the fact that 90 percent of all observed broods during the brood survey 
A great many flying juveniles were noted through- 
were either Class II's or III's. 
Of the Class I and small Class II broods identified the bulk were 
out the Province, 
of the late nesting puddler or of the divers' species. 
Table IV, - Aerial Production Data, 1954-1955, 
Stratum A 
1954 
Area Sq. Mi. 22088 
Sample Sq. Mi. 263, 25 
Tot. Brds. Seen 1349 
Brds/Sq.Mi. " 5,12 
Est. No. Birds 
Seen 113091 
Pot. Later Brds. 214 
Pot. Brds. Per 
Sq. Mi. 0.81 
Pot. Later.Brd. 17891 
Tot. Ind. Brds. 1563 
Brds. Per Sq. 
Mi. Ind. 5.93 
Est. No. Brds. 
Ind. 130982 
Avg. Brd. Size 5..59 
Est. No. Yng. 732189 
eel l— SESE 
1955 
22088 
263.25 
1592 
6.05 
133632 
212 
0. 81 
17891 
1804 
6. 86 
151524 
5, 68 
860656 
Stratum B 
1954 1955 
26100 26100 
184.5 189.0 
605 1030 
3.28 5.45 
85608 142245 
172 353 
0.93 1. 87 
24273 48807 
777 1383 
4.21 7.32 
109881 191052 
5.78 6.42 
634912 1226553 
Stratum © 
1954 1955 
16112 16112 
85.5 85.5 
96 46 
1.12 0,54 
18045 8700 
4) 72 
0.48 0, 84 
7734 13534 
137 118 
1.60 1,38 
25779 22235 
5,25 5.00 
135340 
Province 
1954 1955 
64300 64300 
533.25 537.75 
2050 2668 
3.37 4.96 
216744 284577 
427 637 
0.78 1.18 
49818 80232 
2477 3305 
4.15 6.11 
266642 364811 
5.64 5.94 
111175 1503861 2198384 
Production in Stratum C was very poor, in fact water loss was so 
great as to reduce production possibilities to a minimum. Evidences of a later 
hatch (pairs and lone males) in July would be of some value in inmreasing the fall 
flight from this area. 
little confidence can be placed in such a possibility. 
Nevertheless, habitat conditions were of such a nature that 
Successful broods were appre- 
ciably smaller in Stratum C than in strata to the north and total production was over 
13 percent below that of 1954 and about 50 percent below the average. 
