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TABLE B-4- SOUTHERN ALBERTA--1979 WATERFOWL BREEDING GROUND SURVEY RESULTS. 
WATERFOWL BREEDING PAIR SURVEY WATERFOWL PRODUCTION SURVEY 
(NUMBERS IN THOUSANDS) (NUMBERS IN THOUSANDS) 
1979 % CHANGE 1969-1978 % CHANGE 1979 % CHANGE 1969-1978 % CHANGE 
FROM 1978 AVERAGE FROM AVERAGE FROM 1978 AVERAGE FROM AVERAGE 
MAY PONDS 591.2 +19 736.2 -20 JULY PONDS 437.8 +22 472.5 -7 
DUCK BROOD INDEX 129.3 —2 111.4 +16 
AVG. BROOD SIZE 5.100 -f 5-362 =5 
BREEDING POPULATION ESTIMATES LATE-NESTING INDEXES 
DUCKS: 
DABBLERS: 
MALLARD 983.2 +19 1,424.7 -31 17.4 -15 19.4 -10 
BLACK DUCK 0.0 N.C. 0.0 N.C. 0.0 N.C. 0.0 N.C. 
GADWALL 346.5 +24 359.0 -3 11.8 +26 8.3 +42 
AMERICAN WIGEON 402.4 +33 393.6 +2 9.1 +11 6.7 +36 
GREEN-WINGED TEAL 256.9 +16 294.2 -13 8.8 +66 8.0 +10 
BLUE-WINGED TEAL 592.9 +51 722.8 -18 12.7 -29 11.2 +13 
NORTHERN SHOVELER 391.4 -4 419.2 -/ 5.1 -9 6.1 -16 
PINTAIL 1,456.3 +34 1,362.4 +7 702 -8 8.9 -19 
SUBTOTAL 4,429.6 +26 4,975.9 -11 72.1 -3 68.6 +5 
DIVERS: 
REDHEAD 100.8 -25 159.3 —37 1.1 -31 1.6 -31 
CANVASBACK 53.4 =39 78.7 -32 1.2 +100 1.1 +9 
SCAUP 687.5 +48 439.3 +56 35.3 +36 20.5 +72 
RING-NECKED 6.8 —58 7-1 -4 0.0 -100 «7 -100 
AMERICAN GOLDENEYE 8.6 -77 18.8 =54 «4 -20 2 +100 
BUFFLEHEAD 62.9 +11 40.1 +57 «4 -56 3 +33 
SUBTOTAL 920.0 +16 743.3 +24 38.4 +24 24.4 +57 
MISCELLANEOUS: 
OLDS QUAW 0.0 N.C. 0.0 N.C. 0.0 N.C. 0.0 N.C. 
EIDER 0.0 N.C. 0.0 N.C. 0.0 N.C. 0.0 N.C. 
SCOTER 43.5 +39 19.8 +120 1.6 +700 25 +220 
RUDDY DUCK 41.1 -52 7925 -48 4.8 +20 5.6 -14 
MERGANSER 3.6 -65 3.7 =-3 22 0.0 
SUBTOTAL 88.2 -31 103.0 -14 6.6 +57 6.1 +8 
TOTAL DUCKS 5,437.8 +22 5,822.2 -7 117.1 +7 99.1 +18 
COOTS 
AMERICAN COOT 418.0 +148 334.2 +25 
GRAND TOTAL 5,855.8 +27 6,156.4 =-5 

