2016 Mid-winter Bald Eagle Counts
| Compared | % Immatures | Change in | ||||||
| Location | Adult | Sub-Adult | Immature | Unknown | Total | to 2015 | of known age | percentage |
| St. Croix River | ||||||||
| In Wisconsin | 8 | 2 | 3 | 0 | 13 | -3 | 38.5% | -11.5% |
| Wisconsin River | ||||||||
| Pettenwell to Ferry Bluff | 5 | 0 | 2 | 0 | 7 | -32 | 28.6% | -16.1% |
| South of Ferry Bluff | 28 | 2 | 15 | 0 | 45 | 37 | 37.8% | 12.8% |
| Wisconsin River Subtotal | 33 | 2 | 17 | 0 | 52 | 5 | 36.5% | -4.8% |
| Rock River/Pecatonica | 27 | 4 | 26 | 6 | 63 | -56 | 52.6% | 11.4% |
| Illinois River | ||||||||
| Hennepin & North | 6 | 0 | 2 | 0 | 8 | -24 | 25.0% | -12.0% |
| Henry | 4 | 0 | 1 | 0 | 5 | 5 | 20.0% | 20.0% |
| South to Peoria | 40 | 3 | 33 | 3 | 79 | -102 | 47.4% | 23.3% |
| Peoria to Havana | 62 | 8 | 28 | 1 | 99 | -163 | 36.7% | 1.7% |
| Havana to Beardstown | 4 | 1 | 4 | 0 | 9 | 9 | 55.6% | 55.6% |
| South to Grafton | 14 | 0 | 1 | 2 | 17 | 2 | 6.7% | -40.0% |
| Illinois River Subtotal | 130 | 12 | 69 | 6 | 217 | -273 | 38.4% | 6.2% |
| Mississippi River | ||||||||
| Lock & Dam # 2 | 1 | 0 | 0 | 0 | 1 | -5 | 0.0% | -50.0% |
| Lock & Dam # 3 | 3 | 0 | 1 | 2 | 6 | -6 | 25.0% | 25.0% |
| Lock & Dam # 4 | 12 | 2 | 1 | 0 | 15 | 3 | 20.0% | 13.3% |
| Lock & Dam # 5 | 20 | 0 | 3 | 0 | 23 | 5 | 13.0% | 30.0% |
| Lock & Dam # 5A | 1 | 0 | 0 | 2 | 3 | 0 | 0.0% | -20.0% |
| Lock & Dam # 6 | 0 | 0 | 0 | 2 | 2 | 0 | -- | -20.0% |
| Lock & Dam # 7 | 1 | 0 | 0 | 0 | 1 | 1 | 0.0% | 0.0% |
| Lock & Dam # 8 | 13 | 1 | 3 | 3 | 20 | 20 | 23.5% | 23.5% |
| Lock & Dam # 9 | 2 | 1 | 4 | 0 | 7 | -3 | 71.4% | 62.1% |
| Lock & Dam # 10 | 2 | 1 | 0 | 0 | 3 | -9 | 33.3% | 24.2% |
| Inland | 26 | 1 | 5 | 0 | 32 | 10 | 18.8% | 9.7% |
| Lock & Dam # 11 & 12 | 0 | 0 | 0 | 0 | 0 | -15 | -- | 0.0% |
| Sav. Army Depot & Iowa | 50 | 2 | 5 | 1 | 58 | 15 | 12.3% | -21.0% |
| Lock & Dam # 13 | 12 | 0 | 1 | 0 | 13 | -13 | 7.7% | 3.9% |
| Lock & Dam # 14 | 23 | 0 | 5 | 2 | 30 | -3 | 17.9% | 27.6% |
| Lock & Dam #15 | 34 | 1 | 16 | 0 | 51 | -21 | 33.3% | 2.7% |
| Lock & Dam #16 | 5 | 0 | 0 | 0 | 5 | -34 | 0.0% | -30.4% |
| Lock & Dam # 17 | 2 | 0 | 0 | 1 | 3 | -5 | 0.0% | -25.0% |
| Inland | 1 | 0 | 0 | 0 | 1 | -23 | 0.0% | -33.3% |
| Lock & Dam # 18 | 38 | 0 | 5 | 0 | 43 | -37 | 11.6% | -14.7% |
| Lock & Dam # 19 | 17 | 0 | 3 | 2 | 22 | -58 | 15.0% | -1.7% |
| Lock & Dam # 20 | 5 | 1 | 5 | 0 | 11 | 4 | 54.5% | 54.4% |
| Lock & Dam # 21 & 22 | 2 | 1 | 1 | 0 | 4 | -6 | 50.0% | 33.9% |
| Lock & Dam # 24 & 25 | 6 | 0 | 1 | 0 | 7 | 0 | 14.3% | 14.3% |
| St. Louis and Environs | 9 | 1 | 2 | 1 | 13 | -7 | 25.0% | 0.7% |
| South of St Louis | 32 | 1 | 7 | 10 | 50 | -115 | 20.0% | 4.3% |
| Miss. River Subtotal | 317 | 13 | 68 | 26 | 424 | -247 | 20.4% | -0.8% |
| Tennessee | 24 | 1 | 33 | 0 | 58 | 58.6% | ||
| Kentucky | No | report | ||||||
| Missouri River | 21 | 0 | 3 | 0 | 24 | 12.5% | ||
| Louisiana | No | report | ||||||
| 2016 Grand Totals | 560 | 34 | 219 | 38 | 851 | -492 | 31.1% | 2.2% |
| 2015 Grand Totals | 908 | 50 | 319 | 66 | 1343 | -2385 | 28.9% | 3.6% |
| 2014 Grand Totals | 2700 | 180 | 733 | 115 | 3728 | -179 | 25.3% | 3.9% |
| 2013 Grand Totals | 2972 | 45 | 763 | 127 | 3907 | 1935 | 21.4% | -4.7% |
| 2012 Grand Totals | 1381 | 69 | 419 | 103 | 1972 | -70 | 26.1% | -8.2% |
| 2011 Grand Totals | 1317 | 72 | 620 | 33 | 2042 | 475 | 34.4% | 10.3 |
| 2010 Grand Totals | 1134 | 56 | 304 | 73 | 1567 | -1263 | 24.1% | 2.9% |
| 2009 Grand Totals | 2192 | 97 | 491 | 50 | 2830 | 2830 | 21.2% | -2.4% |