Waterfowl Population Summary
Tennessee National Wildlife Refuge
Refuge Total
Fall 2011/Winter 2012
| 10/16/2011 | 11/1/2011 | 11/16/2011 | 12/1/2011 | 12/16/2011 | 1/1/2012 | 1/16/2012 | 2/1/2012 |
2/16/2012 |
|
to |
to |
to |
to |
to |
to |
to |
to |
to |
|
| 10/31/2011 | 11/15/2011 | 11/30/2011 | 12/15/2011 | 12/31/2011 | 1/15/2012 | 1/31/2012 | 2/15/2012 |
2/28/2012 |
|
| Tundra Swan | |||||||||
| Trumpeter Swan | |||||||||
| Total Swans | 0 |
0 |
0 |
0 |
0 |
0 |
|||
| Canada Goose | 534 |
1,110 |
2,297 |
2,505 |
2,653 |
2,398 |
|||
| Cackling Goose | 200 |
200 |
200 |
200 |
|||||
| White-fronted Goose | 100 |
100 |
590 |
900 |
1,250 |
1,750 |
|||
| Snow Goose | 30 |
20 |
35 |
150 |
|||||
| Ross's Goose | 2 |
11 |
13 |
13 |
11 |
||||
| Total Geese | 636 |
1,210 |
3,128 |
3,638 |
4,151 |
4,509 |
|||
| Mallard | 2,457 |
27,112 |
81,997 |
91,458 |
92,493 |
40,517 |
|||
| Black Duck | 56 |
451 |
1,047 |
1,562 |
1,610 |
560 |
|||
| Gadwall | 6,698 |
11,992 |
16,904 |
18,611 |
14,407 |
8,518 |
|||
| American Wigeon | 1,357 |
1,943 |
3,140 |
4,417 |
4,486 |
3,029 |
|||
| Pintail | 1,488 |
5,651 |
6,547 |
6,711 |
5,990 |
2,760 |
|||
| Green-winged Teal | 3,675 |
8,240 |
8,455 |
8,025 |
6,327 |
4,110 |
|||
| Blue-winged Teal | 2 |
5 |
|||||||
| Shoveler | 284 |
500 |
595 |
570 |
950 |
320 |
|||
| Wood Duck | 87 |
59 |
76 |
29 |
63 |
57 |
|||
| Unidentified Duck | |||||||||
| Redhead | 10 |
20 |
|||||||
| Ring-necked Duck | 130 |
4,230 |
8,280 |
9,538 |
8,202 |
4,450 |
|||
| Canvasback | 334 |
225 |
43 |
133 |
3 |
||||
| Scaup | 20 |
955 |
618 |
1,353 |
693 |
992 |
|||
| Common Goldeneye | 164 |
187 |
290 |
181 |
|||||
| Bufflehead | 923 |
591 |
700 |
703 |
774 |
||||
| Ruddy Duck | 185 |
1,095 |
2,080 |
2,104 |
2,015 |
2,310 |
|||
| Hooded Merganser | 14 |
607 |
1,172 |
1,797 |
557 |
290 |
|||
| Common Merganser | |||||||||
| Red-breasted Merganser | 15 |
5 |
5 |
6 |
105 |
||||
| Total Ducks | 16,463 |
64,132 |
131,896 |
147,110 |
138,925 |
68,976 |
|||
| Bald Eagle (Adult) | 13 |
13 |
23 |
34 |
54 |
22 |
|||
| Bald Eagles (Immature) | 18 |
23 |
22 |
31 |
54 |
15 |
|||
| Total Bald Eagles | 31 |
36 |
45 |
65 |
108 |
38 |
|||
| Golden Eagles (Adult) | |||||||||
| Golden Eagles (Immature) | 1 |
||||||||
| Total Golden Eagles | 0 |
0 |
0 |
0 |
0 |
1 |
|||
| Common Loon | 83 |
127 |
25 |
52 |
28 |
36 |
|||
| American Coot | 5,142 |
820 |
2,940 |
2,305 |
2,985 |
1,630 |
|||
| American White Pelican | 1,664 |
200 |
9 |
||||||
| Sandhill Crane | 2 |
20 |
30 |
22 |
|||||
| Survey Details | |||||||||
| Type | Aerial |
Aerial |
Aerial |
Aerial |
Aerial |
Aerial |
Aerial |
Aerial |
Aerial |
| Area Coverage | 100% |
100% |
100% |
100% |
100% |
100% |
100% |
100% |
100% |
| Date Conducted | No Survey |
11.1.2011 |
11.18.2011 |
No Survey |
12.21.11 |
1.3.2012 |
1.20.2012 |
2.2.2012 |
|
| Observer | Wheat |
Wheat |
Wheat |
Wheat |
Wheat |
Wheat |
Wheat |
Wheat |
Wheat |
| Change from Last Year Survey During Same Period of Year (Geese) | N/A |
+9% |
+42% |
-54% |
-60% |
-63% |
-40% |
||
| Change from 5-Year Average During Same Period of Year (Geese) | N/A |
-7% |
+11% |
-34% |
-48% |
-56% |
-35% |
||
| Change from 10-Year Average During Same Period of Year (Geese) | N/A |
-19% |
-3% |
-24% |
-40% |
-45% |
-28% |
||
| Change from Last Year Survey During Same Period of Year (Duck) | N/A |
-60% |
-7% |
-22% |
-30% |
-35% |
-51% |
||
| Change from 5-Year Average During Same Period of Year (Duck) | N/A |
-57% |
-1% |
-24% |
-23% |
-26% |
-38% |
||
| Change from 10-Year Average During Same Period of Year (Duck) | N/A |
-51% |
+12% |
-11% |
-14% |
-13% |
-22% |
||
