2012 Mid-winter Bald Eagle Counts
View counts from 2011 | 2010
% 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
St. Croix River
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%