(33 
TABLE B-14. Washington--duck and coot breeding population indexes by species and stratum 
Stratum Total Percent Change 
Species W. Wash. Potholes Irri. Highlands 1977 1976 Average Average 1976 
Dabblers 
Mallard 7,300 15,210 15,470 8,910 46 ,890 63,180 58,910 -20% -26% 
Gadwal] 5,440 790 90 6,320 9,070 4,780 +32% -30% 
Wigeon 8,100 510 1300 9,950 14,790 9,620 + 3% -33% 
Green-winged Teal 3,440 530 720 4,690 11,020 5,210 -10% -58% 
Blue-winged Teal 
& Cinnamon Teal 2,260 28,370 17,380 6,670 54 ,680 49 ,940 28 ,960 +89% + 9% 
Shoveler 2,610 420 260 3,290 8,530 5,750 -43% -42% 
Pintail 1,960 320 1,140 3,420 7,050 5,820 -41% -51% 
Woodduck 10,960 170 660 90 11,880 4,070 9,410 +26% +192% 
Subtotal 20,520 65,310 36,080 19,210 141,120 167,650 128,460 +10% -16% 
Divers 
Redhead 10,860 4,280 3,060 18,200 26,560 12,320 +487 -32% 
Canvasback 390 170 560 700 330 +70% -20% 
Scaup 7,472 70 550 8,390 9,160 6,410 +31% - 8% 
Ring-necked duck 2,150 220 680 3,050 5,18 2,650 +15% -4)% 
Goldeneye 1,040 220 1,960 3,220 2,950 2,490 +29% + 9% 
Buf flehead 120 50 130 300 380 400 -25% -21% 
Ruddy duck 7,390 1,760 1,280 10,430 16,970 9,930 + 5% -39% 
Subtotal 29,720 6,770 7,660 44,150 61,880 34 ,530 +28% -29% 
Mergansers 
Merganser, American 160 160 300 -46% 
Merganser, Hooded 780 70 850 1,540 2,320 -63% -45% 
Subtotal 780 160 70 1,010 1,540 2,620 -61% - 34% 
Total Ducks 21,300 95,190 42,920 26,870 186,280 231,070 165,560 +1 3% -19% 
Coot 780 32,330 13,870 13,460 60,440 66,550 325320 +87% - 9% 
Grand Total 22,080 127,520 56,790 40,330 246,720 297,620 £197,880 +25% -17% 

TABLE B-15. Washington--waterfowl production indexes. 

Year _ Percent Change 
1967-1976 From From 
‘Species 1977__ 1976 Average ___ Average 1976 
Dabblers 
Mallard 109,800 144,200 144,100 -247%, -24% 
Gadwal1 11,200 16,000 11,800 - 5% -30% 
Wigeon 17,000 24,900 25,300 -33% -32% 
Green-winged Teal 8,200 19,200 13,100 -37% -57% 
Blue-winged Teal 
& Cinnamon Teal 109,400 101,900 76,700 +43% - 7% 
Shoveler 6,100 15,400 14,900 -59% -60% 
Pintail 6,000 14,400 16,400 -63% -58% 
Woodduck 31,800 17,800 25,600 +24%, +79% 
Subtotal 299 ,500 353,800 327 ,900 - 9% -15% 
Divers 
Redhead 27,000 49,000 22,900 +17% -45% 
Canvasback 900 1,500 5,400 -82% -40% 
Scaup 10,000 16,200 9,800 + 2% - 38% 
Ring-necked duck 4,500 7,700 3,800 +18% -42% 
Goldeneye 8,500 10,500 7,300 +16% -19% 
Bufflehead 500 600 500 NC -16% 
Ruddy duck 14,800 31,800 17,700 -16% -53% 
Subtotal 66,200 117,300 67,400 - 2% -44% 
Mergansers 
Mergansers, American 200 600 -67% 
Mergansers, Hooded 3,100 4,300 4,500 -31% ~28% 
Subtotal 3,300 4,300 5,100 -37% -26% 
Total ducks 369 ,000 475,200 400 ,400 - 8% -22% 
Canada goose 14,500 14,100 12,000 +21% + 2% 
Coot 75,700 94,700 45,300 +67% -20% 
Grand Total 459,200 584 ,000 457,700 NC -21% 
SS rr ec ce sl rt 
