
TABLE B-8. NORTH DAKOTA--1979 WATERFOWL BREEDING GROUND SURVEY RESULTS. 
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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 637.3 +54 570.1 +12 JULY PONDS 317.5 +38 346.2 -8 
DUCK BROOD INDEX 30.7 -18 40.7 —25 
AVG. BROOD SIZE 4.844 -12 5.673 -15 
BREEDING POPULATION ESTIMATES LATE-NESTING INDEXES 
DUCKS: 
DABBLERS: 
MALLARD 684.6 +35 570.5 +20 2.9 —53 13.5 -79 
BLACK DUCK 0.9 N.C. 0.0 N.C. 0.0 N.C. 0.0 N.C. 
CADWALL 410.4 +68 276.1 +49 2.0 -17 10.9 -82 
AMERICAN WIGEON 144.2 -21 155.3 -7 04 -20 1.0 -60 
GREEN-WINGED TEAL 58.7 +59 65.6 -11 0.0 N.C. -9 -100 
BLUE-WINGED TEAL 934.8 +27 814.5 +15 1.2 -14 8.9 -87 
NORTHERN SHOVELER 472.5 +70 231.5 +104 5 4 +25 
PINTAIL 560.2 -5 520.4 +8 1.9 -59 2.7 -30 
SUBTOTAL 3,265.4 42 2,633.9 +24 8.9 -41 38.3 -77 
DIVERS: 
REDHEAD 204.8 +3 152.9 +34 -7 -80 1.6 -56 
CANVASBACK 64.4 +164 31.9 +102 -l -83 -2 -50 
SCAUP 252.5 +168 50.5 +400 3 -40 25 -40 
RING-NECKED 57-4 +348 7.6 +655 0.0 N.C. 0.0 N.C. 
AMERICAN GOLDENEYE 0.9 N.C. -l -100 0.0 N.C. 0.0 N.C. 
BUFFLEHEAD 2.3 +156 6 +283 0.0 N.C. 0.0 N.C. 
SUBTOTAL 581.4 +76 243.6 +139 1.1 -76 2.3 -52 
MISCELLANEOUS: 
OLDSOUAW 0.0 N.C. 0-0 N.C. 0.0 N.C. 0.0 N.C. 
EINER 0.9 N.C. 0.0 N-C. 0.0 N.C. 0.0 N.C. 
SCOTER 0.9 N.C. 0.0 N.C. 0.0 N.C. 0.0 N.C. 
RUDDY DUCK 135.2 +21 133.8 +1 1.3 -54 5.2 -75 
MERGANSER 0.0 N.C. 4 -100 0.0 N.C. 0.0 N.C. 
SUBTOTAL 135.2 +21 134.2 +1 1.3 —54 5.2 -75 
TOTAL DUCKS 3,982.0 +32 3,011.7 +32 11.3 -50 45.8 -75 
COOTS 
AMERICAN COOT 1,386.6 +265 305.3 +354 
GRAND TOTAL 5,368.6 +58 3,317.0 +62 
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