37 
TABLE B-19. California--estimated total nesting leaked and fall population indices 
19778 
TABLE B-18. California--estimated total pesting pairs and fall population indices for North San Jonquin Valley, 1974-1977% 
for Suisan Marsh, 1974-19772/ . 
a an ee nner Ese 
nara Estimated Total Nesting Pairs Fall Population Indices 
Estimated Total Nesting Pairs Fall Population Indices SPECIES. Bit LZ} 1376 i977 1374 1375 1976 1977 
Species 1974 1975 1976 1977 1974 1975 1976 197 Duokes 
; Dabblers: 
yp Mallard 2,090 2,130 1,470 1,590 6,780 6,910 4,580 5,170 
° Gadwal] 1,020 1,040 710 840 3,210 3,250 2,230 2,650 
Mallard 3). 1,370000-3,220 1,370 9) 1,380 ° 5s700" 13.383. | bs700 | eT Cinnamon Teal 1,310 1,650 820 g90 4,110 5,180 2,550 2,790 
Gadwall 360 620 160 330 1,810 3,460 800 1,670 Shoveler 220 190 120 180 670 590 360 570 
Cinnamon Teal 270 630 240 330 1,000 2,330 900 1,250 Pintail 290 270 120 140 890 840 350 430 
Shoveler 120 140 60 10 540 600 260 60 
Pintail 100 160 60 30 360 620 220 100 Subtotal 4,930 5,280 120 140 890 840 350 430 
Subtotal 2,220 4,770 1,890 2,080 9,410 20,390 7,880 8,830 Divers: 
ge oo Redhead 70 160 80 20 200 500 240 60 
Redhead 0 0 0 0 0 0 0 0 Ruddy Duck 120 330 140 40 310 890 390 100 
Ruddy Duck 0 60 0 0 0 60 0 0 Subtotal 199 490 220 60 510 1,390 630 160 
Subtotal 0 60 0 0 0 60 0 0 Miscellaneous 10 30 0 0 30 60 0 0 
Miscellaneous 0 30 0 0 120 0 TOTAL DUCKS 5,130 5,800 3,460 3,700 16,200 18,220 10,700 11,770 
TOTAL DUCKS 2,220 4,860 1,890 2,080 9,410 20,570 7,880 8,830 Coot 2,130 7,380 2,890 5,500 11,610 42,720 15,730 29,960 
Coot 40 2,860 560 1,600 190 13,180 2,580 7,350 
a ee a Se ee eR ee ee Se ae 
Pe ee Pe ee a Oe er ae : 
a/Area, 38,850 hectares; Type, gun clubs and flooded pasture and rice marsh; Coverage, 
a/ 25% aerial transect; and Remarks, breeding pairs of ducks increased 7% and the fall 
“/Area, 36,260 hectares; Type, natural tital marsh, gun clubs, managed refuges and population increased 10%. Coots increased 90%. 
agricultural land; Coverage, 7.5% aerial transect; and Remarks, the number of breeding 
pairs and the fall population of ducks showed an increase of 10%. Coots increased 85%. 

