2017 Mid-winter Bald Eagle Counts
| Compared | % Immatures | Change in | ||||||
| Location | Adult | Sub-Adult | Immature | Unknown | Total | to 2016 | of known age | percentage |
| St. Croix River | ||||||||
| In Wisconsin | 5 | 2 | 3 | 0 | 10 | -3 | 50.0% | 11.5% |
| Wisconsin River | ||||||||
| Petenwell to Ferry Bluff | 22 | 2 | 16 | 0 | 40 | 33 | 45.0% | 16.4% |
| South of Ferry Bluff | 34 | 0 | 25 | 17 | 76 | -31 | 42.4% | 4.8% |
| Wisconsin River Subtotal | 56 | 2 | 41 | 17 | 116 | 2 | 43.4% | 6.9% |
| Rock River/Pecatonica | 79 | 4 | 52 | 9 | 144 | 81 | 41.5% | -11.1% |
| Illinois River | ||||||||
| Hennepin & North | 4 | 0 | 2 | 0 | 6 | -2 | 33.3% | -8.3% |
| Henry | 2 | 0 | 0 | 0 | 2 | -3 | 0.0% | -20.0% |
| South to Peoria | 2 | 0 | 0 | 0 | 2 | -77 | 0.0% | -47.4% |
| Peoria to Havana | 28 | 0 | 4 | 3 | 35 | -64 | 12.5% | -24.2% |
| Havana to Beardstown | 4 | 0 | 2 | 0 | 6 | 3 | 33.3% | -22.3% |
| South to Grafton | 40 | 0 | 6 | 2 | 48 | 31 | 13.0% | 6.3% |
| Illinois River Subtotal | 80 | 0 | 14 | 5 | 99 | -118 | 14.9% | -23.5% |
| Mississippi River | ||||||||
| Lock & Dam # 2 | 2 | 0 | 0 | 0 | 2 | 1 | 0.0% | 0.0% |
| Lock & Dam # 3 | 10 | 0 | 4 | 2 | 16 | 10 | 28.6% | 3.6% |
| Lock & Dam # 4 | 6 | 1 | 2 | 0 | 9 | -6 | 33.3% | -6.7% |
| Lock & Dam # 5 | 10 | 0 | 0 | 0 | 10 | -13 | 0.0% | -13.0% |
| Lock & Dam # 5A | 1 | 0 | 0 | 0 | 1 | 2 | 0.0% | 0.0% |
| Lock & Dam # 6 | 1 | 0 | 0 | 8 | 9 | 7 | 0.0% | 0.0% |
| Lock & Dam # 7 | No | report | ||||||
| Lock & Dam # 8 | No | report | ||||||
| Lock & Dam # 9 | 8 | 3 | 7 | 19 | 37 | 30 | 55.6% | -15.8% |
| Lock & Dam # 10 | 3 | 0 | 0 | 0 | 3 | 0 | 0.0% | -33.3% |
| Inland | 12 | 2 | 0 | 0 | 14 | -18 | 14.3% | -4.5% |
| Lock & Dam # 11 | 6 | 0 | 0 | 0 | 6 | 6 | 0.0% | 0.0% |
| Lock & Dam # 12 | 4 | 0 | 1 | 0 | 5 | 5 | 20.0% | 20.0% |
| Sav. Army Depot & Iowa | 27 | 3 | 2 | 3 | 35 | -23 | 15.6% | 3.3% |
| Lock & Dam # 13 | 11 | 1 | 8 | 6 | 26 | 12 | 45.0% | 37.9% |
| Lock & Dam # 14 | 68 | 16 | 6 | 4 | 94 | 63 | 24.4% | 3.7% |
| Lock & Dam #15 | 18 | 0 | 2 | 2 | 22 | -40 | 10.0% | -33.0% |
| Lock & Dam #16 | 24 | 0 | 1 | 0 | 25 | 20 | 4.0% | 3.0% |
| Lock & Dam # 17 | 18 | 0 | 1 | 2 | 21 | 18 | 5.3% | 5.3% |
| Inland | 3 | 1 | 0 | 0 | 4 | 3 | 25.0% | 25.0% |
| Lock & Dam # 18 | 51 | 2 | 3 | 0 | 56 | 4 | 8.9% | -2.6% |
| Lock & Dam # 19 | 54 | 0 | 7 | 4 | 65 | 43 | 11.5% | -3.6% |
| Lock & Dam # 20 | 9 | 1 | 2 | 3 | 15 | 4 | 25.0% | -29.5% |
| Lock & Dam # 21 | 40 | 2 | 5 | 0 | 47 | 40 | 14.9% | -35.1% |
| Lock & Dam # 22 | 36 | 3 | 12 | 0 | 51 | 47 | 29.4% | -20.6% |
| Lock & Dam # 24 & 25 | 4 | 4 | 1 | 0 | 9 | 2 | 55.6% | 31.3% |
| St. Louis and Environs | 22 | 0 | 8 | 1 | 31 | 18 | 26.7% | 1.7% |
| South of St Louis | 77 | 2 | 79 | 8 | 166 | 116 | 51.3% | 31.3% |
| Miss. River Subtotal | 525 | 41 | 151 | 62 | 779 | 326 | 26.8% | 4.8% |
| Tennessee | 13 | 0 | 28 | 1 | 42 | -16 | 68.3% | 9.7% |
| Kentucky | No | report | ||||||
| Missouri River | 37 | 13 | 10 | 7 | 67 | 43 | 38.3% | 25.8% |
| Louisiana | No | report | ||||||
| 2017 Grand Totals | 795 | 62 | 299 | 101 | 1257 | 377 | 31.2% | -0.6% |