Table A-3. Winter Waterfowl Survey of Mexico, January 1979. 
East Coast Interior Highlands West Coast Total Mexico 
Percent Percent Percent Percent 
change change change change 
Species 1979 1978 from 1978 1979 1978 from 1978 1979 1978 from 1978 1979 1978 from 1978 
Dabblers 
Mallard 90 5 + 10,480 3,530 +197 35 + 10,605 3,535 +200 
Mexican duck 14,215 22,470 - 36 10 - 14,215 22,480 - 37 
Mottled duck 2,200 3,510 - 37 2,200 3,510 - 37 
Gadwall 46,035 30,500 + 5] 12,875 28 ,000 - 54 10,315 21,781 - 53 69,225 80,281 - 14 
American wigeon 98,290 119,625 - 18 23,000 62,385 - 63 106,290 96,285 + 10 227,580 278,295 - 18 
Green-winged teal 33,815 11,600 +192 90,485 173,345 - 52 220,300 207,215 - 6 344,600 392,160 - 12 
Blue-winged teal and 
cinnamon teal 583,610 288,145 +102 33,635 32,200 + 4 177,745 312,965 - 43 794,990 633,310 + 26 
Northern shoveler 74,940 58,520 + 28 60,620 102,500 - 4] 126,380 192,122 - 34 261,940 353,142 - 26 
Pintail : 219,160 150,385 + 46 151,890 168,215 - 10 756,385 896,650 - 16 1,127,435 1,215,250 - 7 
Fulvous tree duck 81,505 35,725 +128 75 - 11,860 21,720 - 45 114,655 68,505 + 67 
Black-bellied tree 
duck 15 700 - 98 21,275 10,285 +107 
Subtotal 1,139,645 698,015 + 63 397,215 593,420 - 33 1,430,585 1,759,033 - 19 2,967,445 3,050,468 - 3 
Divers 
Redhead 198,945 268,550 - 26 9,235 690 + 19,670 22,411 - 12 227 ,850 291,651 - 22 
Canvasback 11,275 9,405 + 20 1,570 7,250 - 78 40 1,382 - 97 12,885 18,037 - 29 
Scaup 147,495 226,215 - 35 2,750 9,195 - 70 79,825 99,451 - 20 230,070 334,861 - 31 
Ringneck 18,915 22,215 - 15 350 15,865 - 98 100 1,072 - 9) 19,365 39,152 - 50 
Goldeneye 20 816 - 98 20 816 - 98 
Bufflehead 265 190 + 40 235 75 +213 2,370 2,097 + 13 2,870 2,362 + 22 
Ruddy duck 10,925 17,615 - 38 320 150 +113 3,940 9,875 - 60 15,185 27,640 - 45 
Subtotal 387,820 544,190 - 29 14,460 33,225 - 56 105,965 137,104 - 23 508,245 714,519 - 29 
Miscellaneous 
Scoters 18,780 7,486 +151 18,780 7,486 +15] 
Mergansers 1,025 940 ee 9 190 220 - 14 5,960 7,010 - 15 7,175 8,170 - 12 
Other 10,660 - 6,750 - 17,410 - 
Subtotal 1,025 940 + 9 190 10,880 - 98 24,740 21,246 + 16 25,955 33,066 - 22 
Total ducks 1,528,490 1,243,145 + 23 411,865 637,525 - 35 1,561,290 1,917,383 - 19 3,501,645 3,798,053 - 8 
Geese 
Canada 3,035 4,200 - 28 190 + 30 + 3,255 4,200 - 22 
Brant 120,070 143,117 - 16 120,070 143,117 - 16 
White-fronted 33,165 9,550 +247 26,545 34,450 - 23 3,790 2,137 + 77 63,500 46,137 + 38 
Snow/blue 17,480 25,615 - 32 60,770 56,795 + 7 725 600 + 2] 78,975 83,010 - 5 
Total geese 53,680 39,365 + 36 87,505 91,245 - 4 124,615 145,854 - 15 265,800 276,464 - 4 
Coot 814,695 629,840 + 29 91,075 74,835 + 22 160,040 151,315 + 6 1,065,810 855,990 + 24 
a a EEF SS 
aTree ducks combined on East Coast and on Total Mexico. 
9G 
