TABLE B-4. Southern Alberta--1977 waterfowl breeding ground survey results. 
ee BREEDING PRICSURVE TER PRODUCTION SURVEY 
ATER NUNBERS. IN_ THOUSANDS (NUMBERS IN THOUSANDS) 
. : -1976  % CHANGE 
% CHANGE 1967-1976  % CHANGE 1977 % CHANGE 1967-19 
1977 FROM 1976 AVERAGE FROM AVERAGE FROM 1976 AVERAGE FROM AVERAGE 
: 769.9 -45 JULY PONDS 341.4 -10 495.2 -31 
pe oe es DUCK BROOD INDEX 78.1 -34 116.8 -33 
AVG, BROOD SIZE 4.771 -10 5.447 -12 
BREEDING POPULATION ESTIMATES LATE-NESTING INDEXES 
DUCKS: 
RS: 
OO NALLARG 853.1 -4) 1,498.5 -43 15.3 734 18.8 “18 
BLACK DUCK 0.0. nc. 0.0 nc 0.0 nc. 0.0 “S 
GADWALL 392.3 +13 382.6 +2 21-77 8.6 “76 
AMERICAN WIGEON 194.9 =45 439.0 -56 5.2 -30 6.0 “13 
GREEN-WINGED TEAL 328.0 +4 268.9 +22 ig 61 7.7 -36 
BLUE-WINGED TEAL 750.9 -10 713.2 +5 4.3) -0 9.6 58 
NORTHERN SHOVELER 220.8  -34 449.7 -5] 5.6 -10 6.0 a 
PINTAIL SGT... --67 1,425.2 -76 at 2 3 “63 
SUBTOTAL 3,085.7 -34 5,177.1 -40 : 
DIVERS: | ; 
REDHEAD 175.4 -54 151.5 +16 1.4 “42 1.7 -18 
CANVASBACK 105.8 -15 75.8 +40 2-8 19 +90 
SCAUP ‘vig. 28 403.3 +18 6-65 0 “13 
RING-NECKED ar. 95 6.2 +24 4-33 5 20 
AMERICAN GOLDENEYE 4.4 -86 15.2 -71 2-80 2 ns. 
BUFFLEHEAD 32.9 -26 38.7 -15 att a 00 
SUBTOTAL 803.8  -36 690.7 +17 ; ; 
LLANEOUS: 
irra 0.0 SC. 0.0 i.e = Bee ee Be 
EIDER 0.0 n.c. 0.0 n.c. : es % iS. 
SCOTER 16.2 ~44 20.0 -19 ae 6 7 
RUDDY DUCK 99.2 +202 81.4 t22 2.0 60 : 364 
GANSER : ; 1 1 
ME SUBTOTAL 118.4 +91 104.0 +14 2.7 58 6:3 57 
TOTAL DUCKS 4,007.9 3% 5,971.8 339 63.6 -63 93.8 -32 
COOTS 
AMERICAN COOT 285.4 -44 349.0 -18 
GRAND TOTAL 4,293.3 -34 6,320.8 -32 63.6 “las 93.8 -32 
Sesh Se aby cS LENE RI er en 
TABLE B-5. 
(NUMBERS IN THOUSANDS) (NUMBERS IN THOUSANDS) 
MAY PONDS 
DUCKS: 
DABBLERS: 
MALLARD 
BLACK DUCK 
GADWALL 
AMERICAN WIGEON 
GREEN-WINGED TEAL 
BLUE-WINGED TEAL 
NORTHERN SHOVELER 
PINTAIL 
SUBTOTAL 
DIVERS: 
REDHEAD 
CANVASBACK 
SCAUP 
RING-NECKED 
AMERICAN GOLDENEYE 
BUFFLEHEAD 
SUBTOTAL 
MISCELLANEOUS: 
OLDSQUAW 
EIDER 
SCOTER 
RUDDY DUCK 
MERGANSER 
SUBTOTAL 
TOTAL DUCKS 
COOTS 
AMERICAN COOT 
GRAND TOTAL 
1977 
1,155.4 
ERF REEDING PAIR SURVEY 
% CHANGE 1967-1976 % CHANGE 
FROM 1976 AVERAGE FROM AVERAGE 
-47 2,123.6 -46 
BREEDING POPULATION ESTIMATES 
-5 2,520.5 +14 
n.c. mae -100 
-16 588.1 +2 
-30 774.3 -4] 
-30 343.0 -35 
-8 1,695.1 -4 
-48 741.3 -43 
-74 1,908.4 -65 
-30 8,570.9 -20 
-15 201.5 +13 
-10 201.9 +26 
+43 331.0 +112 
-8 22.5 +100 
+306 16.6 +340 
+57 36.9 +42 
+19 810.4 +67 
mC. 0.0 n.c. 
n.c. 0.0 n.c. 
+292 4.2 +2] 
+30 94.3 +30 
-38 1.8 +17 
+3] 100.3 +30 
-24 9,481.6 -12 
-70 834.2 -47 
-30 10,315.8 -15 
Southern Saskatchewan--1977 waterfowl breeding ground survey results. 
JULY PONDS 
DUCK BROOD INDEX 
AVG. BROOD SIZE 
é- 
WATERFOWL PRODUCTION SURVEY 
1977 % CHANGE 1967-1976 % CHANGE 
FROM 1976 AVERAGE FROM AVERAGE 
718.1 -48 1,072.8 -33 
144.6 -16 139.2 +4 
5.296 +17 5.066 +4 
LATE-NESTING INDEXES 
63.4 a) 62.9 +] 
0.0 n.c. 0.0 Raia 
34.6 -30 26.2 +32 
8.3 -30 13.9 -40 
4.5 -68 9.1 -50 
37.4 +8 23«8 +60 
x ee -73 12.5 -38 
24.2 -12 26.4 -8 
180.1 -24 174.3 +3 
7.3 -50 6.5 +12 
10.5 +98 3.9 +169 
22.6 -7 14.0 +61 
2.0 -39 1.4 +43 
0.0 n.c. 2 -100 
3.1 -20 1.9 +63 
45.5 -11 28.0 +62 
0:0 wit. 0.0 Ke 
0.0 m.e. 0.0 n.c. 
1.5 en +400 
Wd -4) 15.7 +9 
00 n.c 1 -100 
18.6 -36 16.1 +16 
244.2 -23 218.4 +12 
244.2 -23 218.4 +12 
GG 

&% 

