APPENDIX 
A. WATERFOWL WINTER SURVEY TABLES 
TABLE A-l. —Number of birds observed. North America extended, 
winter survey, 1964 and 1963 
Species 
1964 
1963 
Percent 
change 
14-year 
average 
Percent 
change 
Ducks: 
Dabblers: 
Mallard- 
8,708,021 
7,287,513 
+ 
19.5 
7,407,947 
+ 17.5 
Black duck- 
584,529 
485,814 
+ 
20.3 
545,631 
+ 7.0 
Mottled duck- 
99,730 
44,530 
+124 
25, 697 
+288,0 
Gadwall- 
1,356,374 
633,550 
+114 
547,877 
+147.0 
American widgeon - - 
2,031,017 
1,785,239 
+ 
13.7 
1,686,524 
+ 20.4 
Green-winged teal - - 
2,268,464 
1,262,229 
+ 
79.7 
1,092,700 
+108.0 
Blue-winged teal- 
778,927 
402,275 
+ 
93.6 
401,211 
+ 94.0 
Cinnamon teal- 
7,730 
4,969 
+ 
55.6 
_ 
_ 
Shoveler- 
832,953 
849,347 
_ 
2.0 
746,898 
+ 11.5 
Pintail- 
4,694,530 
3, 586,231 
+ 
31.0 
4,105,331 
+ 14.3 
Wood duck- 
— 
60,268 
— 
_ 
_ 
Tree duck- 
70,692 
73,259 
- 
3.5 
59, 340 
+ 19.0 
Subtotal-.- 
21,432,967 
16,475,224 
+ 
30.0 
16,727,729 
+ 28.0 
Divers: 
Redhead - 
805, 956 
593,081 
+ 
35.9 
708,987 
+ 13.6 
Canvasback - 
336,866 
330,329 
+ 
2 
358,420 
- 6.0 
Scaup- 
1,998,206 
3,049,403 
- 
34. 5 
2,579,180 
- 22.6 
Ring-necked duck- 
341,734 
286,755 
+ 
19.2 
258,382 
+ 32.2 
Goldeneye- 
188,432 
205,119 
- 
8.1 
211,087 
- 10.8 
Bufflehead- 
65,184 
79, 494 
- 
18 
82,688 
- 21.2 
Ruddy duck- 
257,692 
286,812 
- 
10.2 
264,719 
- 2.7 
Subtotal- 
3,994,070 
4,830,993 
4,463,463 
Miscellaneous: 
Eider- 
63,900 
117,167 
- 
45.5 
59,641 
+ 7.1 
Scoter- 
118,375 
187,007 
- 
36.7 
228,458 
- 48.2 
Oldsquaw- 
6,425 
30,641 
- 
79 
29,159 
- 78.0 
Merganser-- 
238,672 
239, 676 
- 
0.4 
226,051 
+ 5.5 
Subtotal- 
427,372 
574,491 
543,309 
Unidentified- 
438,106 
480,935 
- 
8.9 
528,391 
- 17.1 
Total ducks- 
26,292, 515 
22,361,643 
+ 
17.6 
22,262,781 
+ 18.1 
Geese: 
Snow goose - 
889,915 
1,022,173 
- 
13 
912,563 
- 2.5 
Blue goose- 
411,521 
373,180 
+ 
10.3 
389, 694 
+ 5.6 
Ross' goose- 
32,450 
25,253 
+ 
28. 5 
14,623 
+221.9 
White-fronted goose- 
270,964 
219,382 
+ 
23.5 
223,805 
+ 21.0 
Canada goose- 
1,423,093 
1,326, 598 
+ 
7.3 
1,179,220 
+ 20.6 
Cackling goose- 
108,995 
238,327 
- 
54.3 
219,478 
- 50.4 
Total geese- 
3,136,938 
3,204,913 
- 
2.1 
2,941,255 
+ 6.6 
Brant, Pacific- 
185,287 
140,025 
+ 
32.3 
Brant, Atlantic- 
182,900 
167,405 
+ 
9.2 
Total brant- 
368,187 
307,430 
Swans: 
Whistling swan- 
91,894 
108,240 
- 
15 
93,628 
- 1.9 
Trumpeter swan- 
578 
611 
- 
5.4 
807 
- 28.4 
Total swans- 
92,472 
108,851 
94,435 
Coots - 
2,636,814 
1,810,243 
+ 
45.7 
2,074,811 
+ 27.0 
Grand total- 
32,526, 926 
27,793,080 
+ 
17 
27,681,498 
+ 17.5 
37 
