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TABLE R- 8. North Dakota--1978 waterfowl breeding ground survey results. oe 8. we 
i ee 
8 Se ee” _=< ee tS <meta ie — ———— 
eS er sy a at. = ee a WATERFOWL PRODUCTION SURVEY 
———-- WATERFOWL BREEDING PAIR SURVEY (NUMBERS: IN-THOUSANDS) 
(NUMBERS IN THOUSANDS) ; 
1978 % CHANGE 1968-1977 % CHANGE 
1978 % CHANCE 1968-1977 Laie tis FROM 1977 AVERAGE FROM AVFRACE 
FROM 1977 AVERAGE FROM AVERAGE 
349 .6 -34 
560.5 -26 JULY PONDS 230.2 +32 
MAY PONDS 413.0 oe DUCK BROOD INDEX S7Pb- “Fee 39.6 4 
AVG. BROOD SIZE Se 525 “bo 5.688 
LATE-NESTING INDEXES 
BREEDING POPULATION ESTIMATES 
DUCKS: oe , 
DABBLERS: 6.2 +24 " - 
: -10 
MALLARD 506.6 Sine ae ; “a 0.0 nic. 0.0 n.c. 
BLACK DUCK a apa: “45 2.4 +4 11.3 -79 
CADWALL 244.0 +45 139.4 +30 <a -17 1.0 -50 
pS ES pele Soe ame: 63.6 =42 0.0  -100 9 -100 
GREEN-WINGE} TEAL 37.0 me 817.2 =10 1.4 -30 8.8 -84 
BLUE-WINCED TEAL 737.4 = +161 page ei 0.0 nec. 4 -100 
Cogn aan eR ge irk 3 $23 Gee FLO 2.2 +109 
PINTAIL 588.4 +546 479. ie aa. 38.7 er 
2,580.4 Nets 5: 
SUBTOTAL 2,572.8 +130 sapere 
DIVERS: 3.5 +600 113 4169 
REDHEAD iste. ae ee ei 6 +100 1 +500 
CANVASBACY. 26.6 iG ani’ ne 5 A $25 
SCAUP 94.1 +441 asi pee eG ata 0.0 wes 
RING-NECKED 12.8 7° i -~100 0.0 Ts CG. 0.0 cy 
AMERICAN GOLDENEYEF. Ecce mee RS % 480 0,0 we. 0.0 BAGS 
BUFFLEHEAD 9 eat ie eg: FATS 1.8 +156 
SUBTOTAL 330.5 +327 ' 
MISCELLANEOUS: Ls wid 0.0 er 0.0 nec. 
OLDSQUAW FO 9 eae cap EG 0.0 nec 0.0 n.c. 
EIDER TI i O00 ae Ox e ieee 0.0 n.c. 
SCOTER 0.0 Tee. aie “19 2.8 +300 5.3 -47 
RUDDY DUCK 11.70 +445 r 7 ~100 0.0 n.c. 0.0 nC. 
MERGANSER 0.0 n.c. ; 19 2.8 +300 5a -47 
SUBTOTAL 111.7. +445 126.7 
22.5 +64 45.8 251 
TOTAL DUCKS 3,015.0 +148 2,930.4 7S 
COoTS 
AMERICAN COOT 379.5 +313 292.4 +30 
GRAND TOTAL 3,394.5 +160 3,222.8 +3 
TABLE B- 9. South Dakota—-1978 waterfowl breeding ground survey results. 
. WATERFOWL BREEDING PAIR SURVEY WATERFOWL PRODUCTION SURVEY — 
(NUMBERS IN ‘THOUSANDS ) (NUMBERS IN THOUSANDS) 
1978  % CHANGE 1968-1977 % CHANGE 1978 % CHANGE 1968-1977. % CHANGE 
FROM 1977 AVERAGE FROM AVERAGE FROM 1977 AVERAGE FROM AVERAGE 
MAY PONDS 427.9 55 366.7 +17 JULY PONDS 243.8 +50 21; 9%.2 +1 
DUCK BROOD INDEX 45:2 +118 30.2 +50 
AVG. BROOD SIZE 4-298 -13 5.099 -16 
BREEDING POPULATION ESTIMATES LATE-NESTING INDEXES 
DUCKS: 
DABBLERS: 
MALLARD 537.3 +101 421.5 +27 9.8 +85 12.9 -81 
0.0 These 0.0 n.c. 0.0 TeiGes 0.0 n.c. 
BLACK DUCK 
AMERICAN WIGEON 257.6 +362 93.0 +177 9.53) +4 yal +10 
GREEN-WINGED TEAL 65.5 +167 51.6 +27 7 .6 +17 
BLUE-WINGED TEAL 1,287.3 +304 659.4 +95 4.9 +63 SER -16 
NORTHERN SHOVELER 419.1 +441 148.3 +183 .8 +100 .6 +33 
SUBTOTAL 3,478.8 +268 1,782.9 +95 29°77 +115 31.6 -6 
DIVERS: 
REDHEAD L512 +1085 44.4 +242 3.6 BA +800 
CANVASBACK 18.0 +374 8.4 +114 a5) 0.0 
SCAUP 69.6 +404 30.8 +126 4 +100 2 +100 
RING-NECKED 4.6 +820 days! +254 0.0 Lonetcery 0.0 Tes 
AMERICAN COLDENEYE Le ail +1000 0.0 tive. 0.0 Tie, 
BUFFLEHEAD 4 ee +100 0.0 Bie. 0.0 Tacs 
SUBTOTAL 245.4 +694 85..2 +188 Ge5 +2150 6 +650 
MISCELLANEOUS: 
OLDSQUAW 0.0 Tok 0.0 nse 0.0 whe. 0.0 Mc 
EIDER 0.0 nec. 0.0 fee 0.0 TeCh. 0.0 Tale oe, 
SCOTER 0.0 n.c. 0.0 nee. 0.0 n.c. at -100 
RUDDY DUCK 41.2 +636 61.7 -33 Dall +950 ara, Awe 
MERGANSER 0.0 Titan 0.0 n.c. 0.0 TEC. 0.0 TC. 
SUBTOTAL lie 2 +636 61.7 -33 Deel! +950 Die -4 
TOTAL DUCKS 3,765.4 +284 1,929.8 +95 36.3 +156 34.4 +6 
COOoTS 
AMERICAN COOT 221.0 +104 132.3. +67 
GRAND TOTAL 3,986.4 +266 2,062.0 +93 

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