a 
TABLE B~ 6. Southern Manitoba--1978 waterfowl breeding ground Survey results. 
Pere 8 “" WATERFOWL PRODUCTION aa ome eo 
eee ee nae TERFOW. &l me eee 
WATERFOWL BREEDING PA 
NR, EA tant Ligaattign 


1978 % CHANGE 1968-1977 % CHANGE 1978 % CHANCE 19681977 % CHANCE 
FROM 1977 AVERAGE FROM AVERAGE FROM 1977 AVERAGE FROM AVERAGE 
MAY PONDS 922.7 +108 653.2 +41 JULY PONDS 314°.5 -6 332.6 -6 
DUCK BROOD INDEX 44.8 +74 23.3 +92 
AVG. BROOD SIZE 4.950 -12 5.386 -8 
BREEDING POPULATION ESTIMATES LATE-NESTING INDEXES 
DUCKS: 
DABBLERS: 
MALLARD 287.3 +14 338.2 = 105 16.3 +23 0 Ee +38 
BLACK DUCK -5 3 +67 0.0 -100 al. -100 
GADWALL 184.6 +207 64.8 +185 1.9 +850 dial +73 
AMERICAN WIGEON 62.2 +260 44.6 +39 1.6 +700 1.2 +33 
GREEN-WINCED TEAL 91.7 +160 105.6 -13 357 +362 9 +311 
BLUE~WINGED TEAL 279.2 -5 522.7 -46 7.5 +21 4.5 +67 
NORTHERN SHOVELER 65.2 +67 91.6 -29 -6 8 -25 
PINTAIL 90.7 +248 171.6 -47 9.7 +575 1.4 +93 
SUBTOTAL 1,061.4 +47 1,339.4 -21 34.3 +60 21ae +58 
DIVERS: 
REDHEAD 30.4 -67 83.6 -64 -6 mT) -14 
CANVASBACK 37.3 -31 60.4 -38 4 +300 <5 -20 
SCAUP 231.4 +78 118.7 +95 4.3 +760 a7. +153 
RING-NECKED 31.4 +202 10.4 +202 a 3 -33 
AMERICAN GOLDENEYE 47.9 +878 16.6 +188 0.0 n.c. al: -100 
RUFFLEHEAD SS +87 15.2 +119 0.0 n.c. -2 -100 
SUBTOTAL 411.7 +33 304.9 +35 525 +817 B85 +57 
MISCELLANEOUS: 
OLDSQUAW 0.0 n.c. 0.0 n.c. 0.0 n.c. 0.0 n.c. 
EIDER 0.0 Nece 0.0 Nee 0.0 n.c. 0.0 iaer 
SCOTER 9 +28 8 +12 0.0 Tc. 0.0 Nice 
RUDDY DUCK 100.0 +48 97.7 +2 33 +120 4.2 -21 
MERGANSER 6.1 +9 4.0 +52 0.0 n.c. 0.0 NaC. 
SUBTOTAL 107.0 +44 102.5 +% 343 +120 4.2 -21 
TOTAI, NUCKS 1,580.1 +43 1,746.8 -10 43.1 +83 29.4 +46 
CRAER CAN COOT 283.1 +57 291.1 -3 
GRAND TOTAL 1,863.2 +45 


a 
—— oa rr et . 
Stee ee eee 
WATERFOWL BREEDING PAIR SURVEY 
CNUMBERS IN THOUSANDS ) 
WATERFOWL PRODUCTION SURVEY 
(NUMBERS IN THOUSANDS) 


1978 = % CHANCE 1968-1977 % CHANGE 
FROM 1977 AVERAGE FROM AVERACE Hers oP Nooo 1967197702 CHANGE 
MAY PONDS 211.3 ag lel 
, +10 
eaene = JULY PONDS 223.1 +69 178.1 +25 
DUCK BROOD INDEX 72.3 +201 45.8 +58 
AVG. BROOD SIZE 5.206 = +11 5.183 n.c. 
BREEDING POPULATION ESTIMATES 
se LATE-NESTING INDEXES 
DABBLERS: 
MALLARD 282.6 215 
384.8 = 
Bice DUCK 0.0 That. 0.0 " ue 3.7 +147 8.0 -54 
ie LL 174.8 +69 nak ae 0.0 n.c. 0.0 n.c, 
RICAN WIGEON 157.0 +104 L7G -8 eg ” 889 4.5 +127 
CREEN-WINGED TEAL 52.0 +364 69.8 os 2.0 +82 By? -46 
BLUE-WINGED TEAL 9329 “Gag! 141.8 ay O40 ane: “A -100 
NORTHERN SHOVELER 179.2 4229 77.2 4132 ae oy +e 
aay f ete +194 41.1 $65 ae Rass ‘7 -100 
. 7.5 a 
DIVERS: : 
REDHEAD 19.3 4122 
. 5.8 +2 
CANVASBACK 7.6 +100 6.9 +10 iG f fine 
okt 72.1: “Lees 46.0 i 0.0 a.c, 4 -100 
KED -9 +200 3 as PDD Gren? 1.0 +10 
AMERICAN GOLDENE YF 0.0 -100 1.4 -100 Oe 05 Baloo ih -100 
BUFFLEHEAD VS * [, 0.0 Bec. eal -100 
SUBTOTAL 101.1 +148 61.7 +64 ee ge 0.0 n.c, 
i +86 te s 
MISCELLANEOUS: 4 
OLDSQUAW 0.0 ne 
i os 0.0 hale 
EIDER : 
SCOTER ae aur 0.0 n.c. ms - mae soe n.c. 
. n.c. 0.0 are i cena . n.c. 
ee DUCK 50.5 +1132 15.0 lee 0.0 n.c,. 0.0 nec. 
ERCANSER Li =29 .) +71 ae 4 +50 
SUBTOTAL Sh.7 499) 15.7 9939 ye n.c 1 -100 
: 5 +20 
TOTA 
L DUCKS 1,441.2 +72 1,206.6 +19 14.0 4154 
COOTS a at 
AMERICAN COOT 95.5 +408 33.1 +188 
GRAND TOTAL 1,536.7 +79 1,239.7 +24 
b/ 1971 not Surveyed 

