TABLE RB-1. 
APPENDIX B. WATERFOWL BREEDING GROUND SURVEY TABLES 
Alaska--1978 waterfowl breeding ground survey results. 
—_—_—_—_—_—=_£_—_—_—_—————<s em ww + 
WATERFOWL BREEDING PAIR SURVEY 
(NUMBERS IN THOUSANDS) 
WATERFOWL PRO!NNUCTION SURVEY 
(NUMBERS IN THOUSANDS ) 
1978 % CHANCE 19-19 % CHANCE 
FROM 1977 AVERAGE FROM AVERAGE 
Not applicable 
Not applicable 
Not applicable 
LATE-NESTING LNDEXES 
66 
1978 % CHANCE 1968-1977 % CHANGE 
FROM 1977 AVERAGF. FROM AVERACE 
MAY PONDS Not applicable JULY PONDS 
DUCF. BROOD INDEX 
AVG. BROOD SIZE 
BREEDING POPULATION ESTIMATES 
DUCKS: 
DARBLERS: 
MALLARD 269.7 -31 205.3 +32 
BLACK DUCK 0.0 mack 0.0 1..G. 
GADWALL 33) +1550 1=3 +154 
AMERICAN WICEON 893.2 +30 488.7 +83 
CPREEN-WINCED TEAL 304.2 +34 265.2 +15 
BLUE-WINCED TEAL 3.6 +28 1.6 +125 
NORTHERN SHOVELER 239.8 +10 102.2 +135 
PINTAII. 1,386.6 -48 P3233 +5 
SUBTOTAL 3,100.4 -26 2,387.6 +30 
DIVERS: 
REDHEAD .l -99 138. -94 
CANVASBACK 47.8 -71 84.1 -43 
SCAUP EOSt52-3 -25 1,272.9 +3 
RING-NECKED 0.0 nec. 0.0 Tce 
AMERICAN GOLDENEYE 104.4 -27 140.0 -25 
RBUFFLEHEAD 100.5 +38 69.1 +45 
SUBTOTAL 1,568.1 -27 1,567.9 n.c. 
MISCELLANEOUS: 
OLNDSQUAW 906.3 -8 605.4 +50 
ELDER 13:37 +39 25.6 -46 
SCOTER 465.5 +7 380.6 +22 
RUDDY DUCK 0.0 Ase: 0.0 19 Bech 
MEKGANSER 17.6 +48 5.0 +252 
SUBTOTAL 1,403.1 -4 1,016.6 +38 
TOTAL DUCKS 6,071.6 -22 4,972.1 +22 
CO0TS 
AMEPICAN COOT 0.0 n.c 0.0 n.c 
GRAND TOTAL 6,071.6 -22 4,972.1 +22 
Not applicable 

Table B-la.* 
Alaska -- Whistling Swan Breeding Population Indexes, 1969 ~ 1978 
(Index Number in Thousands) 
—_—— a ee ss nN —m — 
- a ee ee i 
SS Se = see we ee : - . —— =— -—— SSS —_ — oe ee ee es 
———- i ee ae ee ee eee ee; _— 
- = 
= - 



10-year 
1969 1970 1972 1973 1974 1975 1976 1977 1978 average 
Square Miles Sampled 212 212 212 212 424 424 424 424 424 
Number Counted 367 227 220 286 257 810 670 1433 762 681 
Population Index 75 46 45 59 53 83 69 147 78 70 1a 
—— a a ar ee en 
ee ee ee -  e - - 
=—— <= SS = SS Se ——_a 
—— ee eee — 
—_ ——L—__  S e 
a a ee we ee ne 
* Strata 8 - 11 Coastal tundra 
Expansion factor 102.5 

