2012 Mid-winter Bald Eagle Counts
| % Immatures | Compared | Change in | Compared | Compared | Compared | ||||||||||
| Location | Adult | Sub-Adult | Immature | Unknown | Total | of known age | to 2011 | percentage | to 2010 | to 2009 | to 2008 | ||||
| Wisconsin River | |||||||||||||||
| Pettenwell to Ferry Bluff | 36 | 4 | 22 | 1 | 63 | 41.9% | 28 | -3.8% | -11 | 23 | +7 | ||||
| South of Ferry Bluff | 18 | 12 | 13 | 43 | 40.0% | -7 | 1.2% | -3 | +50 | +50 | |||||
| Wisconsin River Subtotal | 54 | 4 | 34 | 14 | 106 | 41.3% | 21 | -0.4% | -14 | 73 | *57 | ||||
| Rock River/Pecatonica | 48 | 10 | 30 | 11 | 99 | 45.5% | -45 | 5.6% | 75 | +85 | +108 | ||||
| Illinois River | |||||||||||||||
| Hennepin & North | 48 | 0 | 4 | 0 | 52 | 7.7% | -27 | -27.7% | 61 | -28 | +44 | ||||
| Henry | 11 | 3 | 2 | 0 | 16 | 31.3% | 0 | 0.0% | 12 | +13 | +8 | ||||
| South to Peoria | 46 | 1 | 19 | 18 | 84 | 30.3% | -25 | -3.3% | 76 | +75 | +68 | ||||
| Peoria to Havana | 124 | 3 | 53 | 1 | 181 | 31.1% | -442 | -8.8% | 534 | +480 | +459 | ||||
| Havana to Beardstown | 10 | 1 | 2 | 0 | 13 | 23.1% | 10 | -10.2% | -11 | -9 | -4 | ||||
| South to Grafton | 3 | 1 | 1 | 1 | 6 | 40.0% | 6 | 0.0% | -12 | -12 | -14 | ||||
| Illinois River Subtotal | 242 | 9 | 81 | 20 | 352 | 27.1% | -484 | -11.2% | 660 | 519 | -100 | ||||
| Mississippi River | |||||||||||||||
| Lock & Dam # 2 & 3 | 4 | 4 | 2 | 0 | 10 | 60.0% | -17 | 14.2% | -11 | -5 | +12 | ||||
| Lock & Dam # 4 & 5 | 19 | 4 | 8 | 0 | 31 | 38.7% | 13 | 27.6% | -48 | -26 | -26 | ||||
| Lock & Dam # 5A & 6 | 2 | 0 | 0 | 0 | 2 | 0.0% | -25 | -33.3% | -129 | -35 | -83 | ||||
| Lock & Dam # 7 & 8 | 7 | 0 | 1 | 0 | 8 | 12.5% | 5 | 12.5% | -14 | -67 | -9 | ||||
| Lock & Dam # 9 & 10 | 27 | 2 | 3 | 0 | 32 | 15.6% | -29 | -4.1% | 57 | +48 | +19 | ||||
| Inland | 15 | 0 | 5 | 0 | 20 | 25.0% | 8 | 8.3% | 6 | 0 | +11 | ||||
| Lock & Dam # 11 & 12 | 65 | 0 | 31 | 0 | 96 | 32.3% | 74 | -1.0% | -22 | -25 | -125 | ||||
| Sav. Army Depot & Iowa | 39 | 4 | 20 | 0 | 63 | 38.1% | 55 | 13.3% | -18 | -44 | -68 | ||||
| Lock & Dam # 13 | 122 | 4 | 4 | 0 | 130 | 6.2% | 116 | -14.8% | 3 | -198 | -160 | ||||
| Lock & Dam # 14 | 30 | 0 | 5 | 0 | 35 | 14.3% | -13 | -7.4% | -33 | -68 | -202 | ||||
| Lock & Dam #15 | 28 | 1 | 5 | 2 | 36 | 17.6% | -36 | -4.6% | 7 | -119 | -178 | ||||
| Lock & Dam #16 | 31 | 0 | 1 | 0 | 32 | 3.1% | 32 | 3.1% | -39 | -187 | -227 | ||||
| Lock & Dam # 17 | 45 | 1 | 4 | 0 | 50 | 10.0% | 50 | 10.0% | -6 | -199 | --330 | ||||
| Inland | 61 | 5 | 15 | 0 | 81 | 24.7% | 19 | -2.7% | 62 | ||||||
| Lock & Dam # 18 | 251 | 8 | 25 | 0 | 284 | 11.6% | 164 | -7.6% | -89 | -524 | -1419 | ||||
| Lock & Dam # 19 | 156 | 3 | 64 | 40 | 263 | 30.0% | 188 | 6.0% | -17 | -41 | -103 | ||||
| Lock & Dam # 20 | 37 | 2 | 13 | 15 | 67 | 28.8% | 67 | 28.8% | -78 | -114 | -35 | ||||
| Lock & Dam # 21 & 22 | 26 | 6 | 11 | 0 | 43 | 39.5% | 18 | -0.5% | -53 | -105 | -24 | ||||
| Lock & Dam # 24 & 25 | 18 | 0 | 8 | 0 | 26 | 30.8% | 7 | -6.0% | -76 | -150 | -53 | ||||
| St. Louis and South | 50 | 2 | 39 | 1 | 92 | 45.1% | -164 | 2.8% | 211 | +113 | +141 | ||||
| Miss. River Subtotal | 1033 | 46 | 264 | 58 | 1401 | 23.1% | 529 | -7.0% | -287 | -1746 | -2859 | ||||
| Tennessee | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | -16 | -- | -- | ||||
| Kentucky | 4 | 0 | 10 | 0 | 14 | 71.4% | -18 | -0.5% | 24 | +28 | -4 | ||||
| Missouri River | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | -2 | +2 | +2 | ||||
| Louisiana | 0 | 0 | 0 | 0 | 0 | -- | -- | -- | -- | -- | -- | ||||
| 2012 Grand Totals | 1381 | 69 | 419 | 103 | 1972 | 26.1% | -70 | -8.3% | -23 | -788 | -2010 | ||||
| 2011 Grand Totals | 1317 | 72 | 620 | 33 | 2042 | 34.4% | |||||||||
| 2010 Grand Totals | 1134 | 56 | 304 | 73 | 1567 | 24.1% | |||||||||
| 2009 Grand Totals | 2192 | 97 | 491 | 50 | 2830 | 21.2% | |||||||||
| 2008 Grand Totals | 3018 | 96 | 837 | 101 | 4052 | 23.6% | |||||||||
| 2007 Grand Totals | 3033 | 88 | 656 | 47 | 3824 | 19.7% | |||||||||
| 2006 Grand Totals | 1299 | 42 | 350 | 34 | 1725 | 23.2% | |||||||||