Table B-28. Washington--Duck and coot breeding population indexes by species and stratum for 1979, 1978, and the 
1969-78 average. 
1969-78 * Change from 
Species W. Wash. Potholes Irrig. Highlands 1979 1978 Average Average 1978 
Dabblers 
Mallard 12,500 22,340 25,450 7,110 67,400 48,660 55,390 +22 +39 
Gadwal | 8,540 1,380 170 10,090 6,150 6,130 +65 +64 
Wigeon 8,040 140 760 8,940 8,500 9,030 - ] +5 
Green-winged teal 30 5,610 430 900 6,970 6,180 6,590 + 6 +13 
Blue-winged and 
cinnamon teal 1,490 15,480 10,210 2,260 29,440 22,900 36,200 -19 +29 
Shoveler 5,260 600 170 6,030 4,540 6,190 - 3 +33 
Pintail 30 4,990 340 70 5,430 75360 7,500 -28 -26 
Wood duck 7,760 1,140 80 8,980 6,750 7,120 +26 +33 
Subtotal 21,810 70,260 39,690 11,520 143,280 111,040 134,150 +7 +29 
Divers 
Redhead 12,230 4,630 1,020 17,880 12,350 15,190 +18 +45 
Canvasback 30 30 270 400 -93 -89 
Scaup 5,840 1,010 600 7,450 8,670 8,170 - 9 -14 
Ringnecked duck 1,700 430 890 3,020 5,120 3,480 -13 -4] 
Goldeneye 780 1,660 2,440 2,590 2,840 -14 - 6 
Buff lehead 170 40 210 1,090 490 -5/7 -8] 
Ruddy duck 8,950 3,370 1,020 13,340 13,200 12,460 + 7 + | 
White-winged scoter AQ 40 
Subtotal 29,700 9,440 5,270 44,410 43,290 43,030 + 3 +s 
Mergansers 
American 70 70 480 1,440 -95 -85 
Hooded 190 190 520 230 -|7 -63 
Subtotal 260 260 1,000 1,670 -84 -74 
Total ducks 22,070 99,960 49,130 16,790 187,950 155,970 178,850 + 5 +2] 
Coot 3,630 31,690 15,030 5,970 56,320 31,540 38,850 +45 +79 
Grand total 25,/00 131,650 64,160 22,/60 244,270 187,510 217,700 +12 +30 

IS 
